The Ultimate Beginner's Guide to 3D Printing - Part 1

[Music] hey what's up guys it's jack here with rethink tech and in this video i'm going to show you guys how 3d printer works what the parts are how to 3d print from start to finish and basically just an introduction to 3d printing video for beginners or people who want to learn so let's get right into it so what can be 3d printed basically anything you want basically any solid object you can print out let's see here on the screen you can see sunglasses a screw a milk jug a boat propeller pretty much any solid object you can print out which is awesome so you guys might know of some famous 3d printers like makerbot or ultimaker and these basic and these printers are expensive but they're really high quality and they both are good for beginners but they're probably too expensive for people to start out with so i'm going to show you some different options you can use that might be a little bit less known but still get the job done the 3d printing process so this is the core of all 3d printing everybody follows this procedure in order to 3d print so we always start out with a 3d cad model a three-dimensional model on the computer of the object you want to print and from there we export that model as a dot stl file a stereo lithography file and from there we can import that stl file into our slicing software so get two different slicing softwares later in this presentation and from there in the slicing software we can edit the layers the tool path and the temperature and the color and how fast you want to print basically just edits what the printer is going to do and from there we send that code that the slicer makes in a gcode file off to the 3d printer click print the printer makes our object that we made in the cad model or downloaded online and creates a three-dimensional object so how do 3d printers work so there's two main types of 3d printing there's fdm which is the most popular one fuel deposition modeling and sli which is stereo lithography so fdm printers are the most popular because it's an additive process it's not that messy it's not that hard to use and it uses filament which is pretty cheap this prints at about 100 to 20 micron layer thickness that's the lowest step most printers can go which is really really thin so you're gonna get nice and smooth prints with fdm and like i said fdm is an additive process so it uses a spool of filament plastic and it extrudes that through a hot nozzle at 195 degrees celsius or around that temperature and then extrusion through a cone-shaped metal piece called the hot end and extrudes that out into a really really small thin strand and the printer moves around in three dimensional x y and z planes and squishes those layers onto the bed on top of each other as you can see here so that's the most common type of 3d printing the next type is sla printing which the layers aren't as thin but you're still going to get amazing print quality because there's less moving parts than fdm printers so as you can see here sla printing uses a projector or a laser to harden resin as a build platform moves up so in sla your print prints upside down actually so it depends on what you want to print sla is also more expensive fdm is cheaper so that's why most people go with fdm printers so different filament types most people print in pla because it's less toxic it's easy to print and there's more color options but there's also abs which is what they make legos out of it's a harder tougher plastic which is also harder to print there's nylon filament there's carbon fiber there's tpu which is flexible there's wood metal and dark pva all these materials can be printed from a 3d printer so wood filament glow in the dark come from pla2 which is cool so if your printer can print pla most likely can print wood or glow in the dark so types of 3d printers these are the basic types of low-cost consumer-grade 3d printers there's a reprap printer on the left here as you can see it's an additive process that big metal part in the middle is extruder and the blue tape is the bed so that printer has a big bed size of about eight by eight by nine inches that's the average size of a rep wrap printer in the middle here we have a delta printer which is still fdm but it uses three motors and three carriages to move the nozzle around and up and down on a circular bed so that bad is usually a little bit smaller than a rep wrap printer it's about six inches in diameter on the far right we have an sla printer these are more expensive but the quality is a lot better but they don't have as many materials as fdm printers so cad computer aided design software so there's two ways you can find models you can either make it in a cad software or download it online which i'll get to later so my favorite cad softwares and the most popular ones in the 3d printing industry are google sketchup and autodesk fusion 360. these are really easy softwares you can export that stl file to send to your slicer software and they're really easy for beginners easy to learn there's lots of tutorials online they're all around great cad software so i really recommend them so here we go how to find models online this is what a lot of people do for just a quick model there's thingiverse which is the most popular one and myminifactory.com now most people use these to just find quick models they can download them directly as an stl file send them to that slicer software and print any object you would like no thingiverse and my mini factory have almost any object you can think of so i would definitely recommend going there first instead of making your own and your cad software now slicing software there's many different slicing softwares and i just listed three here which is the most common ones so makerware works called makerbot desktop now is the slicer software for makerbot printers like i showed in the beginning cura is for ultimakers like i showed at the beginning too and simplify 3d is what most people use for wrap wrap printers printers they build delta printers things like that but cura and simplify 3d both export as the g-code which most 3d printers use makerbot and make aware export has a dot makerbot file which only makerbots can use so file types and slicing types so so as i said you're going to import your stl file into your slicer software and your slicing software is going to export it as a dot g code which goes directly into the printer but makerbot use a dot makerbot file type but they're both basically the same they're ones and zeros binary that tells the printhead exactly where to go so it says go 20 spaces this way fourth braces that way down 10 spaces pretty much just like that extruders so there's single and dual extruders on printers sometimes there's more than two but mostly one or two print heads or extruders so extruders like these are only on fdm printers because they're added to the process and extrude the filament out of the nozzle so single distributors can only print in one material type but dual can print in two material types as you can see on the right so the dual one has two tips and here as an example you can print black and white at the same time so your model can have two colors which is pretty cool so bed types heated beds so most 3d printers should have heated beds which helps the material stick to them better won't pop off in the middle of the print so there's glass beds and painters tape beds glass beds have a nicer bottom surface but painters tape beds are usually able to stick the print down easier and you can replace the painters tape if some comes off while the glass beds if you scratch the glass you can't really take it off and replace it the glass beds if you scrape the glass you're gonna have to buy a new one which gets pricey after a while infill is how much plastic is inside of your model so i recommend anywhere from 10 to 35 percent infill but you can go up to 100 or down to zero zero will have nothing inside of your print and 100 will have your model is going to be pretty much solid so perimeter layers one to two is how many times your extruder goes around the perimeter of the object so one layer is going to be going around once two is going around twice and bottom layers are how many layers of solid material print at the bottom of your object so i recommend about two to four bottom layers which works best bridging and overhang so on the left you can see that the printer is trying to print a 90 degree angle which is impossible because they can't extrude in midair and stick to air that's not possible so horizontal overhangs are like these but most printers can print about 45 degrees and over that it'll start to overhang and your print will look like this so you should use support to fix this issue on the right you can see the christmas trees have a big 90 degree overhang but this center one has support which is a grid like material that your slicer software adds to your model so don't worry after the print is finished you can just pick that stuff away it'll come off nice and clean and your object will look just like you made it in the cad software or downloaded online so object orientation in your slicer software is very important so on the left you can see bad orientation the red is the object and the blue is the support and it's not going to print properly because you're using a lot a lot a lot of support and you want to use as less support as possible it helps it print faster and the surface will be a lot nicer on the right you can see it's good orientation because there's a lot less blue a lot less support on your model and it'll print faster too so use a loose amount support and overhangs as possible i think about strength as you print your object so as you can see 3d printing is an awesome technology that's my video on the introduction to 3d printing i want to know what you guys are going to print what you want to print what you have printed what you learned from 3d printing comment down below i'll make sure to write back to you please subscribe to my channel for more videos like this i hope you learned something and i'll see you guys in the next video [Music]

Channel: 3D Now

Views: 1,643,648

Keywords: reThinkTech, 3d printing, 3D Printing, 3D, printer, technology, 3D printer intro, 3D printing guid, 3D printer beginners, reprap, sunhokey reprap prusa i3, prusa i3, 3d printer, intro, help, beginners, learning, Ultimate guide, lessons, lesson, printing

Id: 3LBTkLsjHGQ

Length: 11min 23sec (683 seconds)

Published: Fri Mar 10 2017