FreeCAD Beginner Tutorial. How to use Shapebinder to maintain clearance between two bodies

hello viewers this is kedzie's coming up with another video tutorial i posted a video on shape by the few weeks back where i created a box and a lid if you have not watched that video please watch it before we win this video and the link is in the description one viewer of this video asked me how to create a box lead combo where there is clearance between the two so this video is all about maintaining clearance between the two bodies using shape binder so let's start with a new model so in this case i'm going to create a body and then sketch in xy plane so i'm going to start with the rectangle because we are going to create the box first okay so um then i'm going to create some fillets around the corners so go to fill that and then i'm going to dimension this phillips so it's pretty small so i'm going to give like three inches so that's too big so what i need to do here is actually make it bigger you can since this is not constrained so you can kind of drag it everywhere okay so i think that's enough so i'm going to equal all four corners so i'm going to pick control button and pick these guys and say equal and so that essentially made it all four corners three inch radii okay so i think i'm gonna make it a little bit bigger here so i'm going to leave it as it is for now i can constrain i can constrain it later so i'm going to close this and i'm gonna pat this guy for like 10 inches okay yeah it kind of disappeared a little bit but that's okay so we got it back so um then uh there's a quick option that you can use to kind of because we are trying to create a box now this is a solid okay so you know in order to create a box there's a simple way to do that use this thickness uh option now it's called a make thick solid so what it does is uh first thing is you have to pick a face and this face i can pick it and let's see what it'll do when i do this so what it did was it created the open box and it made that uh face disappear but everything else left as these and then it created a like very you know thin section it's more like a thin wall like a sheet metal so i can go and increase the thickness to this say one inch okay and then you have multiple options here that you can do but i'm going to create one inch thick section okay now that's you can see it not only created this one inch section it also put some radii around this and that's all done by these options so this skin option is one and then this arc option okay that's how you create that and i'm going to say okay and get out of that okay so once we created that so the next thing we can do is essentially uh create the lid for this okay now uh i need another body for that so i'm going to create a second body now this second body doesn't have anything but what i can do is i'm going to pick this face okay so just click click on it maybe i didn't click it correctly so i'm going to say okay so once i pick that i can go to the shape binder and create a shape binder so i have created a video on shape binder and i'm going to put a link to that video and you can go and look at that video and that will give you some basic uh understanding of what the shame binders does so i would highly recommend you go and do that what it does is essentially it bind this face to the second body that i created the body zero zero one okay so i created that this it's already still identified the face as phase 10 we no longer has the full face we only have the edge around it but it you know picks that one and then create that shape bind okay now with this shape binder we can start creating the lead okay so uh what i i'm going to rename these bodies so rename it to rename you could use f 2 or the function key 2 and i can say box i'm going to use i'm going to be very simple here and create the say linked okay so once i have the lead that the box renamed now you don't really have to but i just renamed it i'm going to make the box disappear and i'm going to just keep the shape how to dissipate that press the space bar after clicking on the box it'll disappear it or it's it's not you know deleting it just you know hiding it in the view now since i'm in this uh top view i'm going to pick this outer edge okay how do i do that press the control button and pick each edge now once i pick that one i can pad that i mean you kind of thought that okay only the sketches can be padded but you can pad this edge of a shape bind as well so i'm going to say okay it's something goofed up here not giving that message uh yeah because i think it's because i picked this guy too so let let me do that again click on it okay okay so you see that sometimes pre-cat gives you some errors because you have picked multiple objects so that should not you should not do that okay so now i said okay and if you should have a body somewhere okay yeah so we cut the body i just you know fit make it fit with this uh and that'll that work now since it is one inch now if i go back and switch on the box you can see yeah it fit nicely but the problem is um you know it's going to you know this is not a good lid right you have to have some kind of lead that a portion of the lead should you know be should be inside the box so that you know you you can really close it now how do i do that so i'm going to go back to i don't need this i'm going to hide both of them i'm going to have the the shape binder active again now the original question i had from a viva is okay i can how do i create a lid that is not too tight so if i pick these edges around it i can create that easily and that's what i did in the last tutorial on uh shape binder but i want to create a gap right slide again so that's like slight clearance so this tutorial is all about how to use the shape binder to create a clearance between two bodies now the best way to do that is you go and click on this you don't really have to do that but okay i can what i can do is i have a i have to create a uh sketchup okay or a sketch okay so now shape bind is a valid sketch option i click on it i select that and now i will use this edge link to first link these uh or pick these edges because i need to um pick this there's some geometry i need to pick up in order to create my sketch so i did that now this is in a sketch this is um how do i say i can select them or pick up i don't know whether that's the right word but it you can select them and you can use them to anchor your sketch now next thing i'm going to do is um the find the center of this uh rectangle or the periphery i'm going to create a arbitrary point here and then center it between these two points okay because this that will give me the true center of this uh rectangle now to do that i go to the symmetric option this is the symmetric pick these two and say this guy now that everything is centered around this point okay now i can start creating my uh inner periphery of the box so what i do is create another rectangle now this rectangle is not centered around it it's it's not even constrained properly okay now what you can do is i can do the same thing i will put fillets let's put some fillets around it okay and then so i as i said i need to center it so i'm going to pick first i'm going to make all these four equal so let's see one by one say equivalent and then put the radii onto this guy so i'm going to say three inch okay so that worked now i'm going to put another point arbitrary point here and then center it say take this guy this time i'm going to pick the center of the inner fillets yeah that should work and then say yes that's it it made it pick the center of that rectangle now i need to make it equivalent uh go to a coincident and pick this guy so now it's everything looks good right now um there's a couple of things i can do here uh first let me give a gap and see what happens with respect to that um it's too much i'm gonna make it half an inch and this gap is half an inch as well so now the the inner rectangle is in a periphery i would say is fully constrained and the reason for it fully constrained it is the center it's constrained to the original periphery and then it gives a gap and and with respect to the outer periphery so that made it fully constraining now [Music] that once it is fully constrained now you can essentially you know close the sketch now use this sketch to pad it since we have had the previous uh section upward i'm going to reverse it and one inch and now you've got that lid right fully done so if i go to the box you can see the lid then the box is fully [Music] finished but let's see how the gaps looks if i view a cross section let's do a clipping now you can see that yeah you have this gap and you have the lead closed in okay now the question is uh what if i change the geometry you know because this is a parametric model you should be able to do that what if i do that what if i change go and change stuff around now this cage wasn't fully constrained so let's go back and put some dimensions you really don't have to but i'm going to do it anyway okay it's 40 inches so i'm putting some position constraints right now so that will fully constrain this geometry here okay so that fully constrained the model or the sketch i would say now if i get out of here okay so nothing has changed i just fully constrained okay now if i go back and change the sketch and the lid should change with the marks as well as the gap should remain the same right that's our expectation let's do that let's say let's make it you know 30 inch i'm going to make it smaller it doesn't matter how you do it i mean you can make it bigger smaller whatever it'll work let's make a square box okay now let's close out okay so what happened was okay that looks good right it bleed change with the box now is the gap going to be maintained and same as previously and it should right um and the way to check that is go to the clipping plane and say clip x yes it maintain the same gap as before even though we changed the box and the blade right we can check it if you want you can measure pick some yeah let's see we can pick something here i want to pick the line okay finally we got it see what that is okay so that half an inch okay still i mean it shows two because you you can see two because you are measuring both in this direction in x and y both but half an inch is in the y direction so that's good okay so as you said as i started earlier this tutorial it's pretty simple it what you can do is you can use the shape binder to maintain clearances between two objects that's the purpose of this tutorial okay now yeah a traditional way of doing is you know you create one one body and you have certain dimensions and then other body if you want to maintain some clearance between the two bodies you have to kind of you know put the other one uh the second body the dimensions you have to create the dimension such a way that you you know maintain that clearance right and that sometimes is you know not easy [Music] and you know with this approach it's much easier to maintain clearances between the two bodies and they are connected so whenever you change go back and change stuff the other body is kind of connected to the the first one so it changes uh at the same time when one changes and then on top of it your clearance is maintained hope you learned something new here please give thumbs up and subscribe and we'll see you in my next video have a blessed day

Channel: CADZiS

Views: 1,420

Keywords: Freecad;, FreeCad, Constraints, Geometric Constraints, Sketcher, workbench, Modeling, 3D Modeling, 3D Printing, cell phone, Planes, sweeping, Draft, Drafting, draft workbench, datum line, datum plane, snap, draft creation tool, Model Tree, Tree View, Standard Part, Part Workbench, Part Design workbench, cumulative single solid, Carbon copy, cut and paste in freecad, shape binder, shapebinder, make thick solid

Id: ZIAvb7o4Z80

Length: 20min 28sec (1228 seconds)

Published: Sat Jun 19 2021