/sci/ - Science & Math

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Anonymous Tue Mar 26 11:27:23 2019 No.10498418 [Reply] [Original]

could someone explain to me how 3D printers work?

>>	Anonymous Tue Mar 26 11:29:37 2019 No.10498424 >>10498418 What dont you get? It's like a 2D printer that just keeps laying new layers on top of the old until you have a 3D object.

>>	Anonymous Tue Mar 26 11:32:01 2019 No.10498432 >>10498424 it can't because every structure would had to have an even base otherwise it would collapse

>>	Anonymous Tue Mar 26 11:35:48 2019 No.10498438 >>10498432 Retard.

>>	Anonymous Tue Mar 26 11:37:35 2019 No.10498444 >>10498438 if you can't explain something to a retard than you are a retard yourself

>>	Anonymous Tue Mar 26 11:40:19 2019 No.10498451 >>10498432 No it wouldn't, you just can't have any free floating parts. You're just taking cross sections of a 3D model and stacking them.

>>	Anonymous Tue Mar 26 11:53:51 2019 No.10498479 >>10498444 No, it just means you, the retard, are too stupid to understand something as simple as 3D printing.

>>	Anonymous Tue Mar 26 12:03:17 2019 No.10498502 its like 2d printing but placing 2d layers on top of each other to get a 3d object, this is done using a thin "pen" injector that heats up some type of material for this purpose and draws the object layer by layer

>>	Anonymous Tue Mar 26 19:45:30 2019 No.10499774 >>10498502 then it cools in place? why doesn't it look sloppy like a mortared brick wall then?

Anonymous Tue Mar 26 19:47:51 2019 No.10499777

>>10498418
Think about it this way

A 2D printer is like you wiping your butthole with a piece of paper. The paper is 2D, the shit pattern is also 2D
A 3D printer is like you shitting on the floor. The ground is 2D, but the shit is a perfect 3D object.

>>	Anonymous Tue Mar 26 19:50:17 2019 No.10499781 File: 16 KB, 425x425, Hot_glue_gun.jpg [View same] [iqdb] [saucenao] [google] >>10498418 It's like this but with a bunch of motors attached.

Anonymous Tue Mar 26 19:51:06 2019 No.10499784

Designer here who dabbled in 3D printing. To really understand 3D printing you need to complete a specialized 4-year curriculum in 3D printing (or at best 2-year if all you want to do is tinker at home). Otherwise in the simplest possible terms, 3D printing is just layering of material to produce a 3D form. That's it.

>>	Anonymous Tue Mar 26 19:58:57 2019 No.10499795 File: 167 KB, 960x895, Layer height.jpg [View same] [iqdb] [saucenao] [google] >>10499774 >why doesn't it look sloppy It depends on the layer height.

>>	Anonymous Tue Mar 26 20:22:54 2019 No.10499842 >>10499784 >you need to complete a specialized 4-year curriculum fuck off faggot, this guy just basically explained it in a crude picture! >>10499781

>>	Anonymous Tue Mar 26 20:59:13 2019 No.10499907 File: 103 KB, 420x420, LQBait.png [View same] [iqdb] [saucenao] [google] >>10499784

>>	Anonymous Tue Mar 26 21:04:45 2019 No.10499920 >>10498418 make plastic hot push it through a small nozzle move the nozzle so it draws whatever form you want

>>	Anonymous Wed Mar 27 11:09:12 2019 No.10501200 >>10499795 exceptional demonstration. saved and thanks

>>	Anonymous Wed Mar 27 11:42:12 2019 No.10501277 >>10499774 >why doesn't it look sloppy like a mortared brick wall then? Learn how to mix mortar and lay brick. It should never "look sloppy."

>>	Anonymous Wed Mar 27 11:48:22 2019 No.10501300 File: 117 KB, 680x788, e61.png [View same] [iqdb] [saucenao] [google] >>10499777

Anonymous Wed Mar 27 13:07:25 2019 No.10501495
File: 94 KB, 638x479, addictive-printing-or-3d-printing-13-638.jpg [View same] [iqdb] [saucenao] [google]

>>10498418
Not very well. There are a number of different processes, with new ones being developed. They can range from selectively curing polymer resin with light to stacking up tiny blocks. This gives an overview of some of the processes.
https://www.3dhubs.com/knowledge-base/additive-manufacturing-technologies-overview
Personally I really like photopolymer inkjeting. In this process you use an inkjet (some times even the same one as a 2d printer) to spray photopolymer and special dissolvable support material, which is then cured by UV light. Rinse and repeat for however many layers you have. This has the advantage of being able to make multimaterial parts.
Also you should know that the fused deposition modelling process is absolute shit
>>10499907
so you think you're hot shit huh? I'll bet you actually don't know shit about 3d printing. So tell me how photopolymer cures in traditional stereolithography. Also how does sintering proceed in the laser sintering process and what are the implications of this?

Anonymous Wed Mar 27 20:04:52 2019 No.10502535

>>10501495
>you think you're hot shit huh?
Photo-polymer like the name implies is just a liquid that hardens in response to light. In stereo the part is printed hanging upside down using a bath of resin that is activated by a laser the other option is is polyjet where it is more like a normal inkjet printer with a light source near the nozzle to cure the material.
Laser Sintering is also all in the name you use a laser to sinter a powdered material into a solid. Shit sucks because you basically make a sandbox around your part and you have to clean off the powdered material. Major advantage is that it is the only method I know of that works with metal.

I only use FDM at work but my boss is interested in expanding to polyjet.

>>	Anonymous Wed Mar 27 20:12:34 2019 No.10502551 >>10498418 When will I be able to 3d print a gf?

>>	Anonymous Wed Mar 27 20:27:06 2019 No.10502587 >>10502551 https://www.youtube.com/watch?v=i5L6CpD6nM8

Anonymous Wed Mar 27 22:51:44 2019 No.10502869

>>10502535
I'm sorry, but that is incorrect. I expected you to at least get into the chemistry of photopolymers or the curing process itself. I asked about the process of how sintering proceeds, although I may not have made it clear that I meant how the sintering process proceeds at the microlevel. So you have another chance, I will admit that. By what chemical process(es) do photopolymers cure under light? Are there any potential problems arising from this? How does photocuring proceed at a microlevel in a traditional stereolothography machine? That is with a top down laser like the one originally invented by chuck hull.

Anonymous Wed Mar 27 23:40:51 2019 No.10502995
File: 29 KB, 1401x872, SouthHampshireInstituteofTechnologyAdditiveManufacturing6.gif [View same] [iqdb] [saucenao] [google]

>>10498418
The 3D printer ejects layers of plastic whereever there is supposed to be plastic, then on the next layer, if there are overhangs, it first ejects air to hold them up first. I know because I studied CS.

>>	Anonymous Thu Mar 28 00:06:30 2019 No.10503046 >>10502869 That's like saying you need to understand electron drift to write computer code.

Anonymous Thu Mar 28 01:53:01 2019 No.10503224
File: 745 KB, 910x467, 3d printed multimaterial stereolithography.png [View same] [iqdb] [saucenao] [google]

>>10503046
sorry it seems I may have replied to the wrong anon. >>10501495 and >>10502535 were meant for >>10499784. Fuck you specialized 4 year curriculum designer anon. Even if you actually went through a 4 year curriculum, you're probably a glorified technician. I learned about much of the important details in undergrad. For understanding and running them at a basic level, anyone can do that. As long as you've played with play-doh as a kid you can understand FDM.
>>10502995
Goddamn CS trash. So let's go over the CS stuff first. STL does not support color, so you can't have that eye. STL is not the only format you can use and in fact there are ways of doing 3d printing without doing rasterization or pixelation. I HATE the STL file format so much! FUCK STL AND TRIANGULATED FORMATS! Ok, so let's move on. 3d printers don't eject air to hold up overhangs, the print support material. The support material can either be chipped away or dissolved in the case of FDM and photopolymer inkjetting. Most consumer 3d printers don't use support material and instead rely on the user chipping away supports made of the same material.

>>	Anonymous Thu Mar 28 01:56:33 2019 No.10503228 >>10498444 triple bits brah >>10498418 OP use youtube and google for this shit, 4chan is only for weird or unorthodox questions

>>	Anonymous Thu Mar 28 06:07:26 2019 No.10503525 >>10503224 I have an Ender 3. I think I know what I'm talking about.

>>	Anonymous Thu Mar 28 09:03:17 2019 No.10503778 File: 1.05 MB, 2000x3000, 81D0685D-0683-4A4B-AB4D-8B68A8AC826B.jpg [View same] [iqdb] [saucenao] [google] can’t wait to see where the tech goes honestly

>>	Anonymous Thu Mar 28 16:37:53 2019 No.10504696 >>10499795 Left is best

>>	Anonymous Thu Mar 28 16:48:09 2019 No.10504718 >>10499777 How come almost everything in this universe can be explained with feces.

>>	Anonymous Thu Mar 28 18:09:51 2019 No.10504852 >>10499784 > he thinks you need a degree in materials science to run a 3d printer Of course, that's why you need a degree in chemistry and a grad course in nanotech to run a traditional printer.

>>	Anonymous Thu Mar 28 18:18:35 2019 No.10504863 >>10503778 I think it's amazing that they 3d printed that chick's face but it still needs some work

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