IMO heat formed from stress will not be a big deal, especially considering that people frequently build machines out of PETG (Prusa’s i3 variants, custom CoreXYs like Vorons and E3NG). The bigger problem is creep, which suggests that you shouldn’t use PLA for this part.
Comment on Ender 3 V2 damage?
remotelove@lemmy.ca 1 week agoKeep in mind that any heat created from stress on plastic will still be minimal and it will just take lots of time to create visible deformation. You can mitigate this mostly by printing critical parts at 100% infill.
I always over-engineer parts that are mechanical. That is just my preference. If you look at the original part, it is likely designed to be strong on only one axis. This saves money and time for bulk manufacturing. (Compensate home prints with better materials or bulkier parts is my own rule of thumb. Everything is a trade-off, is my point.)
KingRandomGuy@lemmy.world 1 week ago
morbidcactus@lemmy.ca 1 week ago
Petg inside the enclosed though can definitely have a short service life, the original x axis idler on my mk3s gave up the ghost after a month or so of pretty consistent printing of abs in the summer, had expected it so i the first thing I did in abs was a set of prusa spares which lasted until I did a bear mod last year.
There’s obviously variation in filament though so YMMV, petg is still a solid material to use if you don’t have an enclosure (though I’m always recommending then if only for gasses and fine particles while printing)KingRandomGuy@lemmy.world 1 week ago
Yeah, I agree. In the photo I didn’t see an enclosure so I said PETG is fine for this application. With an enclosure you’d really want to use ABS/ASA, though PETG could work in a pinch.
I also agree that an enclosure (combined with a filter) is a good idea. I think people tend to undersell the potential dangers from 3D printing, especially for people with animals in the home.
beastlykings@sh.itjust.works 1 week ago
What filter would you use? I’ve never played with abs because I didn’t want to have to vent an enclosure outside, especially in the winter. But if it could all stay inside that’d be great.
I have a cat. Cat tax: Image
beastlykings@sh.itjust.works 1 week ago
Maybe I’ll take a crack at it then, thanks!
remotelove@lemmy.ca 1 week ago
Please do! Success is awesome, but failure is important. Enders are pure hobby printers, after all. Half the fun is tearing them apart, rebuilding components and learning what works and what doesn’t for your own use cases.