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comment by kleinbl00
kleinbl00  ·  30 days ago  ·  link  ·    ·  parent  ·  post: Pubski: April 2, 2025

Do not overestimate the competence of the Internet when it comes to troubleshooting 3d-printed parts.

Overture PETG and PLA are good about four rolls out of five. If things suddenly change and suck ass it's nothing you did, it's their quality control.

There's a vast legacy body of dead bullshit on Thingiverse because Thingiverse has been mismanaged for more than a decade. There's a vast thriving community on Printables because Prusa decided Thingiverse was too embarrassing to deal with. Both communities suffer a continual brain drain to Cults because people start getting greedy at about the thousandth download and put their shit behind a paywall.

Anycubic PETG and PLA cost barely more than Amazon Basics and are of vastly higher quality. They're also regularly on sale. There, see, you never have to experience the heartbreak of Overture.

All of the filament you will buy will be Chinese. Prices may well go up. The good shit is ProtoPasta, which is made in Oregon. It's spendy but of impeccable quality. Maybe less spendy now, comparatively speaking.

Nobody has a good support algorithm. You will need to learn how to draw supports for anything even vaguely challenging.

PLA is about four times as easy to work with as PETG. PETG is substantially more durable. ABS is only necessary for high temperature shenanigans; as a material I hate it.

PLA should be glued down on a smooth sheet. ABS should be glued down mercilessly on a smooth sheet. PETG should be printed on a textured sheet. You should wash them with soap and water occasionally but much less often than you think. Don't resort to IPA or anything dumb; see above about internet.

Concerns about VoCs out of 3d prints are greatly overblown. ABS stinks but the level of toxins it kicks out are around a tenth what you get simply living with a laser printer. That said, an enclosure keeps temperatures more stable and it matters if you're printing anything more exotic than PETG.

If you're replacing nozzles more often than once every six to eight months you're doing something wrong. And don't worry, you'll do a lot of shit wrong. But eventually you'll realize that all the advice you're reading is also wrong.

The "makers" will convince you that you should do everything in OnShape. They are fucking dumbasses. The "professional makers" will give you coupon codes for OnShape while doing everything in Fusion. They are dire fucking dumbasses. You will flail around for a while trying to prove me wrong and then you will do what everyone with half a clue eventually does, which is succumb to SolidWorks. It will cost you like $80 a year from Cleverbridge, and then you will spend two months' tuition at SolidProfessor getting through the first and second levels of self-education. Seriously. Start there. I had a fifteen year autoCAD education and experience with Solidworks 1.0 backintheday and I couldn't so much as draw a cube in SolidWorks without going through basic training. But once you go through basic training the world is your oyster.

I would say I print out maybe nineteen designs of mine for every one I print for someone else. Everyone's designs are so bad.





Ay-Nawn  ·  29 days ago  ·  link  ·  

Most prints I've seen across YT have had some form of jank associated with them to get the job done - post-print sanding by hand, acetone vapor smoothing, or hard to grasp support systems. Most of these are hobbyists doing testing videos which end with some sort of "lol oops" error w.r.t. makeshift post-print processes. BUT, that seems part of the fun.

Good to know on VoCs. That and the fire risk OB joked about were the most chatted about when googling safety concerns... though concerns about fumes never seemed substantiated. Or, at least not as well documented as house fires. Threw a few extra spools into the 'cart' before ordering. For better or worse, there's an IKEA trip in the cards now for storage.

Got a whole new bookmark folder with this and veen's comments.

Really gotta get a workspace that's away from the pets (read: seriously consider speeding up plans for a house if the Powers That Be make it possible without strife). But

OftenBen  ·  29 days ago  ·  link  ·  

I have a winix air purifier in my home office. When the printers are running I have it set to full blast. Never seen the purity status light change from the printers.

If I or one of the cats passes gas, green to red in a heartbeat.

kleinbl00  ·  29 days ago  ·  link  ·  

You gotta keep in mind that you don't know how many of the people in the hobby are twelve.

Once upon a time there was a column in Pro Sound News called "the cranky old sound mixer" which was some nameless flinty asshole who basically shit on every trend. he was right more often than he was wrong. One need only search "orcs with tits" in Hubski to get my general opinion on the 3d printing community. That was before I got a cheez whiz printer; I will know also refer to "knitting for dudes."

My wife and I agree that "maker" is one of the dirtiest words the millennials ever coined. It's their way of saying "dilettante, but make it aspirational." You have to be exceptionally stupid to have a printer catch fire. Not that there aren't a lot of exceptionally stupid people out there but! PLA extrudes at like 220 degrees. Water boils at like 212. You have to have reached new heights of stupidity if your melty process involves combustion-grade temperatures. And yeah - you probably don't like the smell. Those of us who grew up building plastic models can tell you that what you're smelling is orders of magnitude more benign than we used to put up with just opening up a plastic pack of Tamiya, heaven forfend if you were stretching sprue to make antenna wire. It's just fucking polystyrene and that's the shit everyone thinks is toxic.

There was a time when you bought a Prusa and were fucking done with it. Me? I bought a Prusa and was fucking done with it. I bought a Prusa because every camera house in LA prints their shit on a Prusa, and their shit is thrown into a box with $200k worth of glass and hauled out to the desert where it is not allowed to break.

then everyone bought Bambu because all their talk about independence and makers and shit was a total fucking lie, they were all about the bottom line and they didn't give a single fuck that it all went through Chinese servers. And when all their printers turned on in the middle of the night and crashed they got what they deserved.

Now everyone's all "zomg can Prusa ever catch up" because none of them print for any duration or any real use. It's all shit their wives don't want or need but can be justified by making low-poly napkin rings or some shit.

    BUT, that seems part of the fun.

Yeah and see if I sent a TPS report to my Epson and needed to soak it in a bag of nail polish before I could give it to my boss I wouldn't say nice things about Epson. "but I made it!" no one gives a fuck, Chad. "Makers" have been trying to make "3d-printed X" cool for fifteen fucking years now, fucking give up. It's a tool for rapid prototyping. I use it for rapid prototyping. You run into this with the jewelry community. "I spent over four hours piercing this piece with a jeweler's saw!" Great! You should probably be paying yourself about $70 an hour for survivability, can you sell that thing for $300? No? Well than let's call your hobby what it is then, shall we? Buddy of mine bought a skookum laser. He's making dog tags. He's got 'em down to 45 minutes of burn time each! yay! Except he accepted a contract for 100 of them which means he's looking at the better part of two work weeks sitting there swapping pieces out like a Vietnamese sweatshop. If that's really where you want your hobby to be, good on ya but as business models go, yours sucks.

I wrote this over ten years ago. The difference between now and then is I'm probably 18,000 hours into 3d printing, two different kinds. Oh, and bulk ABS has come down by a factor of 3.

TWO OTHER FUN FACTS FOR THE 3D PRINTED AVIATION COMMUNITY

1) There is no difference from a compression/tension/deformation standpoint between 25% infill and 100% infill. Carnegie Mellon ran the numbers you can look them up. I print nearly everything at 10% with 2-3 shells, gyroid fill. If it's a bracket that requires screwing things into it I run 25% gyroid with like 5 shells, which gives you enough material that you can print threads and tap. Which isn't nearly as strong as using threaded inserts but threaded inserts also like having 3-5 shells to gloop into.

2) you can make damn near anything fly through sheer power to weight

veen  ·  30 days ago  ·  link  ·  

To add to the above (most of which I wasn't aware of, so thanks): start out with TinkerCAD + PrusaSlicers. TinkerCAD is super easy to get started, but does allow for fairly precise building blocks. PrusaSlicer has a bit of a learning curve, but once you know there's almost nothing you need to change other than level of detail (nozzle setting) you should get pretty far on your own.

I learned a bunch of printing wisdom from /r/fixmyprint, one wisdom of which is that given a seemingly simple problem there are always four different solutions proposed cuz overstimating internet users. But the good one is usually in there.

With infrequent use of the printer, there's a good chance the nozzle will clog and your printer will not print a single good layer. There's a few YouTube videos on how to solve that, it looks hard but it's not that hard once you're comfortable opening up your printer head.

Ay-Nawn  ·  29 days ago  ·  link  ·  

Messing around with TinkerCAD today and likely through the weekend as I get started. Thanks for the rec. Dipping my toes into electronics/soldering for the flight controls itself is the least interesting part of the long-term goal, mostly due to ignorance. This'll help alleviate some of it. r/fixmyprint seems a goldmine.

Funny (and encouraging) seeing a few of y'all able to chime in on 3D-printing. Wasn't expecting it, but all-the-more excited for the gadget to arrive.

kleinbl00  ·  29 days ago  ·  link  ·  

Any dipshit can learn to solder in 45 minutes.

Any dipshit who knows how to solder can learn to do surface mount in 2 hours.

Sincerely, some dipshit who has gone through four entire rolls of solder

A gift from me to you

OftenBen  ·  29 days ago  ·  link  ·  

This is true.

Source: I am a dipshit who managed to fix his wiring harness in his car and saved like $300 on a new one with 10 min of work and some heat shrink.