Fusion 360 Crash Course: Create your own designs for 3d printing!

so i've done a few of these crash course type videos in the past while ago i did one for arduino and the esp32 controlling leds and things like that then more recently i did another one for soldering to teach people the basics of that to make it easier for people to jump in and start making the kinds of projects that i like to show on my channel today's video is going to be about 3d modeling with fusion 360 so if you've ever wanted to create your own designs for 3d printing this one's for you all right so before we get into it a couple of things that i want to get out of the way and the first thing is that i am not an expert at this by any means there are a lot of people out there who do this kind of thing day in and day out for their full-time job that's not me i'm completely self-taught with some help from youtube like i imagine a lot of you guys are but honestly that's kind of one of the things that i wanted to drive home with this video is that you don't have to be an expert you don't have to have a ton of training with just some basic working knowledge of the fundamentals pretty much anybody can jump in and start making some pretty useful stuff right away that said if you are somebody who does cad work professionally or if you're just an expert at using fusion 360 and if you see me doing something incorrectly or whatever feel free to jump in the comments and let me know just be nice about it i will link to some really good resources and other youtubers that you should definitely check out in a blog post that i'll link to in the description so in this video first i'm going to cover some basic operations and concepts that you're going to need to know for pretty much any design that you'll be working on then i'll build on that and show you how to make a simple phone or tablet stand and then i'll take everything a few steps further and show you how to build a shell around an existing part like raspberry pi now this is going to be a longer video and there's really just no way around that but to hopefully make it a little bit more manageable i'll put some timestamps in the description so you can jump around to different parts of the video i'll also include exports of fusion 360 projects for everything that i'm going to show you today so you can download those and open them up and follow along if you want also i've got a couple of designs that i never got around to sharing with you guys so i'm gonna put those up on patreon for supporters to download and then here in a couple of weeks i'll put them up on thingiverse for everybody else so anyway with all that out of the way let's get started okay so let me show you around a little bit here at the top are a bunch of buttons and they'll actually change depending on what you're doing so it's kind of like photoshop in that regard and it can be a little bit confusing but honestly i barely ever need to touch these buttons at all and i'll show you a few tricks to avoid even having a look at them there are some menus in here that i do dig into from time to time to see if there's any tools that are maybe better suited for what i'm doing or anything that i didn't know existed so those are worth digging through for sure here on the left is the project tree so you get a few things by default like the origin here with planes for the x and y axis x and z and y and z axes and then any bodies that we create any sketches that we create anything like that will get added to this tree so you're going to be using that a lot here at the bottom is the timeline and every little thing that we do every operation is going to show up as a separate icon here at the bottom so this can be really handy to roll back the timeline to a certain point if you want to undo some changes or if you want to go back and edit an operation that you did a little while back you'll see what i mean here in just a few minutes up at the top right is this cube for changing your perspective you can click on it and drag it around like this or you can click on one of the sides to quickly jump to the top or any of the sides like that and then at the bottom here are a few controls for toggling how it rotates and things like that if you click with the middle mouse button and drag around it'll pan around like this and then if you hold shift and click the middle mouse button and drag then it'll rotate like this so when you start a project from scratch like this most of the time the first thing that you're going to do is add a sketch and a sketch is exactly what it sounds like it's a 2d drawing that you can create 3d geometry from so i'll go ahead and click that and now it's asking where i want to create that sketch you can create sketches on planes like these three that it gives us by default but you can also add them to the face of an existing model i'm going to create this on the x and y axis plane so now you can see that our buttons here at the top changed to drawing mode so we can add lines we can add rectangles circles curves and things like that i'm going to make a center rectangle and i could get to it through this menu right here but what i normally do is just press the s key on the keyboard and that brings up a search box so i can start to type in center rectangle and there we go now i didn't have to dig through that menu or anything like that that's just a really quick way to find stuff is by pressing s and then start typing what you're looking for so uh this is a center rectangle so you need to specify the point for the center of it i'm going to click on the origin you can drag to tell it how big to make each side or you can type it in directly so i'm going to make this 20 millimeters by 20 millimeters so now you can see this inner region here is shaded light blue so that means that it's a totally contained region of the sketch meaning that there are lines going all the way around it and i can select that region if i want to so just to show you if i press l to go into line mode i can create a line from here to down here so now i could select this region or this region so anyway i'll select that and now i'm going to press e for extrude so this is where it's actually going to create some 3d geometry based on this sketch and from here you can either drag this arrow out or you can type in a measurement directly so i'm going to type in 20 millimeters there and you have a few options over here on the right and you'll notice as you select different tools to do different operations this box will pop up with some different parameters that you can enter in so the one that i want to show you is the direction by default it's just one side like this but you can also select two sides if for some reason you wanted to maybe pull the other side out a different amount but then you can also do symmetric so i'm going to enter in 10 millimeters here and so that's gonna pull it out 10 millimeters on either side so now i've got a 3d cube here now this was actually a really inefficient way to create a cube if you look at the create menu up here you can actually add primitives like boxes and cylinders and spheres and things like that really easily but i wanted to demonstrate how you can create a sketch and then extrude things from that that's one of the most common operations that you'll find yourself doing and also just to point out down here at the bottom you can see the timeline is starting to fill in so i can grab this bar over here on the right and drag it back if i want to so now all we've got is our sketch and then drag it back to the end so it redoes everything and then if i want to change anything if i want to jump back into that sketch i have a couple of ways that i can do that i can either click on it down here in the timeline or like i said earlier this project tree starts to get filled in as you add things to it so now we've got our sketch here and then we've also got the body that we created by extruding from that sketch and you can show and hide things by clicking that eye icon next to them okay so let's add another sketch here and this time i'm going to rotate it and make this sketch on the bottom of that cube let's add a circle to it the shortcut for that is c you've also got this button up here that you can use to get to it or use that search box that i was telling you about earlier so that's one thing that you'll find is there are several different ways to get at things within this app i'll click the origin here once again to make it in the middle and i'm going to type in 10 millimeters for the diameter of this circle so now there are two regions on this sketch there's the inner portion where i created this circle but then there's also the outer portion as well so i'm going to select this circle and i'm going to press e to extrude that so if i drag this down then it will add this shape onto this cube it'll all be part of the same body but then if i drag it up inside of the cube you can see over here it automatically switched to a cut operation so i'll go ahead and press ok on that just so that you can see it and now we've cut that hole out of there that's not actually what i want to do though i'm going to drag this out let's make it stick out by 10 millimeters one other thing to note here is you can change this operation to new body and so if i hit ok with that if you notice another body appears over here on the project tree so now if i wanted to i could export those separately and print them out separately but that's not actually what i want to do i'll go back and change that back to join so a couple of more operations that i want to show you that i find myself using in almost every design that i work on the first one is a chamfer so i'll press s to bring up the search box start to type in chamfer and there it is so what this does you can select some edges i'll select the top ones here and then you can drag this arrow and you can see what it's doing it's kind of cutting around those edges at an angle so this can be really useful for just making things look nice but it also has some real useful properties to it that i'll show you here in just a second especially for 3d printing but there's one important option here by default it doesn't equal distance chamfer which means that it does it as a 45 degree angle but if i wanted to i could do two distances so i could cut four millimeters down and let's say two millimeters in so i'm gonna change that back to equal distance and let's say two millimeters so the other thing that you can do with the chamfer operation uh so i'll bring that up again and i'm gonna select the outer edge of this circle here on the bottom so now what i can do is drag this outwards and you can see it's actually adding material to it instead of cutting it away so this can be really useful not so much here but let's say that for some reason i really needed to print this part with this circle at the bottom on the build plate of the printer i'm going to drag this back on the timeline to show it without it so let's say that i printed it with this circle flat against the build plate on the printer i would need a bunch of support all around here because when you're printing something obviously you can't just print on air so it's going to need some support material there but if i add this chamfer here that makes it so that i could print this without any supports at all now depending on what you're making that's not always going to be an option to you but it's something that i've used pretty often to make it so that i don't need support on things let me show you an example here real quick so this is the giant game boy that i've been working on for way way too long at this point and so these parts of the shell here i wanted to print them vertically well there are a bunch of screw posts on the inside uh that if they didn't have that chamfer they'd need a bunch of support material to be able to print them but by adding those chamfers that makes it so that it can print them without any supports at all and you can see i kind of use that same trick up here at the top and over here to cut down on the amount of support that i need by quite a bit so again it's not something that works every time depending on what you're making but it's a handy trick to keep in mind as you're designing things i really need to get back and finish this project the last tool that i want to make sure that you see is called a fillet so you can either press f to bring it up or you can bring up the search box and type in fill it and yeah i know it's spelled the same way as the cooking term but uh in cad world it is pronounced fillet so same thing as the chamfer i'm going to select a few edges here and now i can drag this arrow inwards and it does kind of the same thing except it's doing it with a nice rounded corner so again i use this all the time just to make things look nicer but you'll run into situations where it can help making a part quite a bit stronger as well so let's say for some reason i needed this to be quite a bit stronger i could add a fillet at this point to taper that so now we got rid of that hard angle so this will be quite a bit stronger all right so those are a few basic operations that you'll find yourself using in nearly every single design that you work on all right so i've got an empty project here now let's make something a little more interesting let's make a phone stand so first thing i'm going to do as usual is create a new sketch and i'm going to make that again on the x and y axis and so the first thing i'm going to do is just kind of roughly sketch out uh the shape of this thing so i'm going to press l to bring up the line tool that's also this button up here so i'm going to hide the origin here by clicking on that i uh let's see how do i want to do this i want it to go kind of like that i'm going to want that bottom corner to be lined up with the origin it'll come up like this over and then back down so all of the lines you see are blue and what that means is that they have no constraints to them so i can click the different points in the different lines and i can drag them around as i please that's not very exact or precise for modeling things to print out so what we need to do is we need to add some constraints to them to tell it how long each line should be maybe what angle it should be at relative to another line things like that while we're in the sketch mode here i'm going to press d and that'll bring up the sketch dimension tool so first i'm going to say that i want this guy here i just click on that line and drag out a little bit i'm going to say that i want that to be 10 millimeters long now this line i can drag around this point and that will stay 10 millimeters long i'm going to press d again only this time i'm going to click on this line and then click on this line so now you can see that it's letting me add a constraint on that for what this angle between these two lines should be so i'll click out there and i want that to be 90 degrees and once you add constraints by the way you can drag these things around to make it a little bit easier to read as well uh next i'm going to tell how long to make this line press d again and then click on that line i think 13 millimeters was what i measured on my phone and then i'm going to add another angle between this line and this line to make that 90 degrees as well okay so that's starting to look a little bit better these things are kind of locked in place now so as you're sketching things out like you just saw me do sometimes it will be smart enough to add constraints for you so for example this right here means that this line should always be horizontal so i can click this point and drag it around and you see that that line always stays horizontal so i'll say that i want this piece to be let's say 10 millimeters as well i'm going to add another line but this is going to be a special line so i've got my line tool up here and i'm going to click this button over here to tell that i want to make a construction line so now i can click this point here and drag it over to meet up with this line over here so this line is dashed and what that means is that it's a construction line so it doesn't actually play any role in making those regions that i can extrude or anything like that but you can still use them for adding constraints and measuring things lining things up those kinds of things select that line and then toggle that button again you can see that that region gets shaded so i could extrude that if i wanted to and now i can press d to bring up the dimension tool and click this line and this line and let's say that i want it to be 60 degrees i was really close already there okay looking pretty good now all that i need to do is tell it how tall these things should be so i'm going to add a dimension with that same tool and i'm going to click on this line and then this line down here that i just added that construction line so now um i can click and i can tell it how far away from this bottom line this top line should be so let's make that i don't know let's make it 70 millimeters so now you can see everything's turned black so that means that everything's got a constraint on it so it knows exactly how the shape of this should behave it's all kind of fixed and locked into place now i think that i can still probably yeah i can still drag this guy around but i'm going to leave that for the time being so next i'm going to add some fillets just to make it look nicer and it'll actually print a little bit nicer as well but this time we're going to do it within the sketch so there's a button up here for that and i'll click a line here and then click a second line next to it and that'll let me enter in a corner radius let's say i want it to be two millimeters you can keep going down the line and adding more line segments to that i'm just going to go all the way around and make everything two millimeters there now we've got some nice rounded corners but this is still just a single line i can't actually extrude anything from this so there's a tool called offset that is perfect for what we're trying to do so i'm going to double click on one of these line segments and that will automatically select all of the connected lines and i'm going to press o on the keyboard and that brings up the offset tool and i'm still actually in construction mode so i'm gonna click that to toggle it and so now i can click and drag and it's creating another line for me that is parallel with this line and i'm gonna make this 1.6 millimeters so now we've got our second line that runs all along here but it's still it's not filled in because it's just two adjacent lines so i'm going to press l to add another line i'm going to make it go from this point to this point and then this point to this point so now that gets filled in as blue and so now that's actually something that we can select and extrude now first though i'm going to add another construction line real quick press l to bring up my line tool and go into construction mode and i'm going to make it go from this bottom corner here if i zoom in here you can see it kind of snapped to different things a triangle means that it's going to a midpoint of a line so yeah if i drag it over here you can see that it kind of snaps here and adds a triangle but this icon down here that appears when i drag it over here that means that it will be tangent to this curve so i'm going to click there now what i'm going to do is i'm going to select this line that i just added and press this button up here what this will do is whatever line you apply this rule to it will make it snap to be either horizontal or vertical whichever one it's closer to being so this is pretty close to being a horizontal line so with it selected when i click this button it's going to snap and make that horizontal for me so now you notice this little line segment here turned black so now everything is fully dimensioned it's a fully constrained sketch it knows how everything should behave relative to each other that kind of thing and i didn't have to specify a length for this line honestly this is probably kind of a weird way to set up these constraints if i were really trying to make this a clean design i'd probably go in and clean it up a little bit like there are probably some ways that i could do this with only one construction line here and things like that but this will work for what we're doing so i'm going to select this inner region here press e to extrude it i'm going to change it to be a symmetric extrusion and tell it that i want to extrude uh 30 millimeters so it'll wind up being 60 millimeters wide and there we go now we've got a 3d shape that we could go and print out right now um but if i put something heavy on it like a tablet these thin pieces are probably going to kind of bow outwards uh when they have any weight on them so i'm gonna go in and add a crossbeam uh from the back to the front to make it a little bit stronger and kind of hold that piece together so i'll open up my sketch here again i'm gonna create a line here and make it go from the back to the front so it filled in that region but that's not actually what i want i want another line parallel to this one so i'm going to press o to make an offset for it and let's say that i want it to be 1.6 millimeters a good rule of thumb is to make the the width of walls some multiple of the width of the nozzle on your 3d printer so mine's 0.4 millimeters so 1.6 millimeters is a multiple of that and it should make some nice strong walls so 1.6 millimeters these are not constrained so just to make it a fully constrained sketch press d to bring up my dimension tool click on that line click up here at the top line and let's say we want it to be 30 millimeters away from that there we go so i'll press finish and hey where's that cross beam that i just added well if we open up this extrude operation here on the timeline i've got everything except for that region that i just added selected so i can go ahead and hold down command on a mac i think it's probably control on a windows machine and then click that region to add it to what gets extruded there let's add a couple of fillets i'm going to press f to bring up that tool i'll select these inner edges here this doesn't have to be super precise let's see maybe one and a half millimeters looks pretty good and then i'm going to add another fillet operation only this time i'm going to select this edge this guy right here this one and this one let's make those like three millimeters that looks pretty good so that'll be much stronger than it was initially and it just looks a little bit nicer as well so now when you want to export it to actually print something out if i expand the bodies on the project tree so i can right click on that and click save as stl i'm going to hit ok go ahead and save that and so now you can load up the exported stl file in your slicer of choice and print it out so this next example is quite a bit more complicated there are a lot more steps to it but it's not too bad so hang in there now when you're designing something around an existing part like a raspberry pi you might be tempted to pull out your calipers and start taking measurements and base your design on those you can do that if you want and i do that all the time with more obscure parts but when it's something as popular as a raspberry pi there's a really good chance that someone else has already done the hard part for you so there are a couple of really good resources that i want to show you and the first one is called grab cad so you can go here and type in whatever you're looking for and a lot of times you can find really accurate models for whatever you're basing your design around but a couple of tips for finding stuff and downloading stuff from grab cat the first thing is just to keep an eye on how many downloads and how many thumbs up each design has usually the more popular it is the more accurate that model is the other thing to watch out for are the file types that are included in the download some of them only have stl files which you are able to import and use in fusion 360 but they're not nearly as easy to work with as some other file types so try and find a design that has either a step file or even better yet a fusion 360 export that you can then import and use in your project so this one looks pretty good you can even load it up in a 3d viewer here to get a better look at it but yeah this looks like it'll work great another resource that i want to make sure that you see uh is from adafruit they've actually got a github repository uh with cad files for a bunch of their parts that you can buy on their shop i mean look at all this stuff in here it's super handy so you can download them directly from here and then import them into your projects so if you're working on a project based around one of their parts makes it super easy to do that and build shelves around them or integrate them into an existing design so back in fusion 360 i've got a new design up here and you actually need to save it before you can import models to use in it okay so now let me move my window down here just a little bit in the file menu you can click upload and then you can drag the file that you just downloaded here go ahead and click upload press this button up here to show your different designs your different projects and now you can right click what you just uploaded and press insert into current design so you can move it around if you want to i'm just going to leave it where it said it press ok and there we go so this is still my raspberry pi case project that i have going but i've got this model imported into that design and you can see it's got this little chain link there so that means that if i make any changes to this i could pull those changes in to use in this design first thing that i'm going to do is make a sketch and i'm going to make it on the x and y plane that it automatically added for me and now i'm going to press p to bring up the project tool and you can see as i hover over everything i could uh project those onto the sketch but really all that i want is the green board here so i'm going to click that and then before i hit ok i'm going to click the construction button over here and then press ok now i'm going to hide the raspberry pi model and look at that i've got a nice outline of the exact size and shape of the raspberry pi pcb and i've even got points here for where the screw holes are so first i'm going to make the actual box shape that's going to go around it so double click one of the edges on the outside and it will automatically select all of the attached edges i'm going to press offset untick the construction option here so it's going to add an actual line that i can use you want to give some wiggle room in there you don't want to have it be exactly the size of whatever you're putting inside of it so i'm going to add let's say two millimeters to it and i'll show you why i'm adding so much here in just a second and now i can select that and it's really easy to select since those other lines from the raspberry pi pcb those are all construction lines so i can really easily select that and i'm going to show the raspberry pi and i'm going to press e for extrude and then over here in the direction option i'm gonna do two sides so here's what i'm gonna do i'm just gonna kind of eyeball this it doesn't have to be super exact for what i'm doing i'm gonna pull the bottom side down just to make sure that it's coming below all those pins that stick out the bottom that looks about right i'm gonna do the same thing on the other side and make sure that it comes up above those usb ports and ethernet port and all that stuff i've got it set to new body hit okay so there we go the first thing i'm going to do is split this and i'm going to split it at the origin there so up here at the top there's a split body button and now it brings up these options over here i'm going to select the body that i just created as the body that we're going to be splitting and then here it wants you to select what you're going to use to actually cut this thing in half so you can use faces of existing bodies obviously that wouldn't make much sense here so what i'm going to do i'm going to hide this body for now same thing with raspberry pi and i'm going to split it on this plane right here so i just click that and then it shows me a preview of what that's going to look like it's going to split it where that red circle is press ok and now you can see it added another body so now i've got a top half and a bottom half and so something useful that you can do just to make it easier to work with as you keep adding things to it i'm going to rename this to top and this one will be bottom next step is to hollow those out and there's a really really useful operation for doing just that so i'm going to hide the bottom rotate around and select this face here so the operation is called shell so again there's a button for it up here or you can search for it in the search box so now this arrow shows up and watch what happens as i drag this you can kind of see what it's doing there it's hollowing it out starting at the face that i selected and it's making walls that are whatever thickness i'm specifying so i'm going to make this 1.6 millimeters and there you can kind of see inside there now we've got it all hollowed out so the raspberry pi uh can actually fit inside there i'm going to hide the top and the bottom and the raspberry pi and do the same thing to the bottom there so now we've got a hollowed out box next i'm going to hide the top and i'm going to add screw posts to the bottom so here's how i'm going to do this i'm going to create a new sketch i'm going to do it on this bottom surface here next i'm going to show the original sketch that i made that has the outline of the raspberry pi on it and so i'm going to press p to project from that sketch onto the sketch that's on that bottom surface there and now i'm gonna go and select just the points of where those screw holes are press okay and hide that sketch so now look at that i've got points exactly where the screw holes are on the raspberry pi board so now i just need to make some concentric circles around these points and extrude them up to the pcb so i'm going to press c to bring up the circle tool i'm going to center it of course at one of these points but i'm not going to put in an exact measurement just yet and i'll show you why go ahead and offset this outer one to give me actually something to extrude up but again i'm not going to add an exact measurement to it okay so let me show you this feature before i go any further if you click the modify menu here and go down to change parameters what this screen lets you do is enter in some values and give them names that you can then refer to elsewhere in your design so let me show you what i mean by that i'm going to add a new user parameter and i will call this screw hole width and i'm going to make that uh let's say two millimeters now i'm going to add one more and i'll call it i like to be nice and descriptive with my names there uh and i'll put that at 1.6 millimeters press ok and so now these dimensions i can press the d key to bring up my dimension tool click on this inner circle and instead of typing in a number here i can type in screw hole width see it has an fx in front of it that means that it's one of those user parameters that i specified and it's got that value that i entered in on that screen same thing with this offset i can double click that number and type in screw post wall thickness there we go so the reason that you might want to do that and the reason that it's so useful is because now i can go over here add a circle screw hole width so now all of these measurements are based off of those values that i entered into that screen so if i go back into it let's say i printed it out and found that the screw holes were too loose or something like that now i could go in here and type in 1.9 millimeters you see all of these screw holes here now updated so incredibly useful for measurements that you're going to be using all throughout your design like this if i hold down shift and click each of these regions now i can extrude those up to meet up with the raspberry pi press e to extrude i'm going to show the raspberry pi model here and for now i'm going to hide the bottom part now if i rotate and look at the bottom and then over here in the extent type instead of distance i'm going to click to object and i can click the bottom surface of the raspberry pi here and now you can see that it's extruding those up just until they touch the bottom of the raspberry pi board but notice it changed the operation to new body that's because there's nothing for it to join with so make sure that you show the bottom half again see it switched back to join and now we've got some screw posts now something that i like to do with screw posts pretty much every time is add some fillets to them so press f to bring that up select each of these bottom outer rings and and that looks pretty good so that'll make those quite a bit stronger and they won't be nearly as likely to snap off okay so looking at it this probably actually does it for the bottom half so what i'm trying to see is whether or not any of these pieces are bumping into this bottom half of the shell so there's a really useful tool that you can use to get a look at the inside of things i'm going to click this edge here and then up here at the top click inspect and then go down and click on section analysis this is something that i use constantly for getting a good look at how things line up so from here you can drag inwards and look at that it gives us a nice cross-section of everything that intersects that plane that i'm moving back and forth so it actually doesn't look like anything is bumping against it and and sure enough looking at the raspberry pi itself it looks like nothing actually extends below the bottom of it so yeah i think that the bottom half is actually good to go here so next we need to add some holes to the top and some top screw holes so i'm going to show the top and i'll hide the bottom and then i'm going to add the raspberry pi as well so now i'm going to put some holes on the top where the screws will be inserted and they'll go all the way through here to meet up with the raspberry pi board and then into those screw posts on the bottom i'm going to do kind of the same thing that i did on the bottom i'm going to add a sketch here on this surface i'm going to show the original sketch press p to bring up the project tool and then select each of those points where the screw holes are hide that initial sketch there now these holes need to be a different width because you don't want the screws to actually bite into those when you're just trying to get it through those into the bottom part so um i'm going to add another parameter here this one i'll call top screw full width and i'll make this one like 2.25 millimeters press c to bring up the circle tool top screw hole width and then i'm going to offset each of those just like on the bottom so press o to bring up that tool and i'm going to use the same offset thickness for this and so now first i'm going to select the inner holes hold down shift to select each one of those e to extrude set it to object instead of distance and select this top edge there and there now we've got some holes for our screws to be inserted on the top and something kind of annoying that it does every time that you do an extrude operation is it'll hide the sketch that you're just working on so you have to go back and show that now i can select each of these regions press e to extrude show the raspberry pi and again i need to re-show the top half so that it can join up with it and there we go so now we've got screw holes that go all the way through the top through the board and into the bottom half of our shell next step is to add some cutouts for these ports along the edges so first i'm going to create a sketch on this end let me go ahead and rotate it so it's up right here and then i'm going to hide the top half now i'm going to project these ports onto this new sketch so i'm going to press p to bring up that tool again and i'm gonna do these as construction lines and i'll show you why here in just a second now each of these pieces is a separate body so i'm gonna select bodies right here and select each one of these guys to project out now i'm doing these as construction lines because look at all this extra junk that it's adding when i project those bodies on it these are the legs at the bottom there's some weird bits that stick out on the shielding around the ports and things like that that i don't want so i'm just going to use these as guides to create rectangle cutouts that are much cleaner and easier to work with press r to bring up the rectangle tool now i just dragged it out here kind of arbitrarily but now i'm going to go in and actually line it up so it looks like these dots here up at the top and here at the bottom uh are actually perfect for where we need the cutout to be so i'm just going to drag those corners so that they snap to those and then i'm actually going to have the bottom portion of it come all the way down so i don't have to worry about any thin pieces that i would bridge when i print it you'll see what i mean here in just a second do the same thing with this guy and now our ethernet port so now i've got those three ports that i can select and hide the raspberry pi and show the top half of the shell and i'm pressed e to bring up the extrude tool i'm gonna do two object like i did before and click the back side of the shell here so it goes all the way through there and then if i reshow the raspberry pi you can see those holes line up perfectly well i may have spoken too soon there are these tabs that stick out so let me go back and adjust where those rectangles are real quick so what i actually want to do is i want to make this line come all the way out here to the edge of this metal tab that sticks out a little bit on the usb port i'm going to select this line press that coincident constraint and then i'm going to select one of these outer points here so now that line jumps over there and that's a rule that that line now has on it is that it has to be coincident with this point that i selected so now i can select this line and say i want it to be coincident with that now it looks like i actually need to do that on the top here i should have looked at that a little bit closer before i did this but i'll make that coincident with this top one do the same thing over here there we go much better so now it gives us enough room for those tabs to actually come through so now i'm going to do the same thing on the side ports there that we need to expose for the charging the video out and the headphone jack so i'm just going to kind of speed through that because it's exactly the same thing that i did here and there we go now we've got cutouts for our headphone jack power video out usb ports and our ethernet jack so we're almost done here i've got a few more things that i want to add to make it look a little bit nicer and work a little bit better when you're putting it together as well real quick so first i'm going to add a chamfer to the top and bottom half so bring up my search box with s and select those two edges and just kind of eyeball it here it looks like one millimeter looks pretty nice and then i'm gonna do the same thing for the screw holes uh so the screws can kind of nest down into there oh and one thing that i forgot to do that i did on the other half was add a fillet on the at the base of these uh screw holes here so i hide the bottom half then i think last thing that i'm going to do is add some fillets to some of these ports here so let me show the raspberry pi in the bottom half bring these in a little bit this is really just to make it look nicer and the nice thing about having these really accurate models uh is stuff like this you can just kind of eyeball you can just kind of look at it and see that looks about right it doesn't have to be exact uh but if the model that you downloaded does end up being pretty inaccurate then that method of course won't work very well and same thing over here oh and it looks like now that i'm looking at it i didn't actually select the right edge over here so yeah okay so i see what happened when i extruded it when i did that cut i didn't have this guy selected so i'm going to do that but watch what happens since we've got this curved edge right here this if i hide the bottom half then you can see it's not actually going to cut all the way through here because i told it to go to this back side of the shell which it's doing but there's that curved part so there's a parameter here that you can change it's this offset over here so i'm going to give it an offset of let's say 0.4 millimeters yeah that looks like it does that and so what that does is it still extrudes it to this point but it goes an extra 0.4 millimeters and that's for situations like this where you need to account for things like that so you can see after i finished editing that the timeline kind of snapped back to the end here and it redid all of these operations but this one on the end this last fillet is yellow now and that's because i extruded another piece of geometry in that sketch so now that corner that i had selected for this fillet doesn't actually exist anymore so to fix that i can just reopen that hold down command or control depending on which os you're on and select that corner now and that should do it okay so i think we're actually done now i'll be the first to say that this is not the best raspberry pi case out there but what it does is it demonstrates several really useful and important tools and operations that you can use in all kinds of different projects especially if you're building them around existing parts like this alright guys well i think that that was about everything that i wanted to cover in this video is getting pretty long as it is so i hope that that was helpful definitely take a look at the blog post in the description uh there will be some other resources there that you should definitely check out along with exports of everything that i showed you today so you can open those up and follow along if you want to huge thank you to my patreon supporters as always i really appreciate you guys you'll see their names at the end of this video as usual and yeah thanks for watching and i'll see you guys next time [Music] you

Channel: wermy

Views: 19,694

Keywords: fusion 360, cad, 3d printing

Id: 5hComh1hFzY

Length: 40min 32sec (2432 seconds)

Published: Mon May 31 2021