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What plastic to print gears?  

Trusted Member
What plastic to print gears?

I know the best plastic to print gears would be nylon; PLA too is good due to its stiffness, but PLA does not resist to high temperatures. I have recently started to print PETG and I like it very much, totally smells-free and good heat resistance, but I've read it's the worst filament for gears since it's quite elastic. Are there some of the newer filaments that are as good as PLA for printing gears but heat-resistant? I'd like to avoid dehydrators for printing nylon and / or steel nozzle for carbon fiber plastics. Are CPE or XT good enough for printing gears, or are they too elastic like standard PETG?

This topic was modified 3 years ago by Nessuno0505
Posted : 06/09/2019 1:21 pm
RE: What plastic to print gears?

Nylon or PETG?

Chuck H
3D Printer Review Blog

Posted : 06/09/2019 6:26 pm
Trusted Member
RE: What plastic to print gears?

Interested in the subject as I need to print some gears and experiencing much difficulties printing nylon with my MK3S

Where it puzzles me is that when I check the filament-material-shart, nylon is not quoted "green" in terms of tensile strength.
Now, my English is far from perfect so what qualities should I look out for as for strength in an environment with forces-applied-to-gears?

I am wondering if I should rather try out ASA (again problems with warping, even with enclosure), or PC Blend.
Yet in another thread I read that PC Blend, however very strong, seems to become brittle in these gear-conditions.
ANyone more info or advice?

Posted : 19/08/2022 9:22 am
Reputable Member

@nessuno0505 @ludodg

A good place to start is looking at a video from Angus at Makers Muse, he tested a bunch of filament

Which 3D Printed Gear is Best?

Prusa i3 MK3S+ FW 3.11.0 (kit dec -20), PrusaSlicer 2.5.0+win64, Fusion 360, Windows 10

Posted : 19/08/2022 12:03 pm
Famed Member
RE: What plastic to print gears?

I've had good luck printing gears using plain vanilla PLA.

I've done very coarse ones for a model railroad moving platform, and finer ones for a toilet tank auto flush mechanism.

Both were drafted using FreeCad's involute gear tool.

Posted : 19/08/2022 5:09 pm
Reputable Member

94 degrees C good enough for thermal resistance? This stuff has about 0 warping for me when printed in an enclosure at 256/60 degrees C and I have probably printed about 20kg of that, after having dismissed a number of other makers´ ASA as absolutely inferior.


This post was modified 1 month ago 2 times by JustMe3D

I try to give answers to the best of my ability, but I am not a 3D printing pro by any means, and anything you do you do at your own risk. BTW: I have no food for…

Posted : 19/08/2022 8:45 pm