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01-20-2016, 08:15 AM #1
- Join Date
- Jul 2015
- Location
- Rural PA
- Posts
- 16
Are small PETG gears tough enough for setscrews to fasten to shaft?
I am just beginning with my Lulzbot Taz 5, using Gearotic (incredible program!) to produce smallish (1-4 in diameter) gears for quite low-load applications. I want to fasten the gears to metal shafts. Gearotic lets me produce a collar on the gears. For various reasons, I use PETG. I can drill the collar and thread it for a setscrew. But I wonder if anyone has experience in the long-term life of this arrangement. Is PETG strong enough that the setscrew won't eventually strip the thread so the gear comes loose? Thanks for any thoughts!
Tim
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01-20-2016, 08:26 AM #2
I made some gears using PLA, which I drilled and tapped for set-screws
and they worked great !
But you Must have Solid plastic at area of set-screw, (100% infill when printed)
(large diameter set-screws, with large threads, is best)
(Of course those gears are used in a low-speed, low-torque motor application)Last edited by EagleSeven; 01-20-2016 at 08:36 AM.
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01-20-2016, 09:47 AM #3
Have you considered using threaded inserts ?
Research metal4plastic on this site.
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01-20-2016, 10:43 AM #4
- Join Date
- Jul 2015
- Location
- Rural PA
- Posts
- 16
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01-21-2016, 02:42 AM #5
You can find some here :
http://3dprintboard.com/showthread.p...-printed-parts
Show us what you do with it.
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01-21-2016, 04:58 AM #6
- Join Date
- Jul 2015
- Location
- Rural PA
- Posts
- 16
Thanks for that info! Because I am in the USA, shipping from that source would be excessive, but I was able to find much the same thing (and many similar parts) on Amazon over here. You gave me a good idea, and I'm going to order a small assortment and do some experimenting.
Tim
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01-21-2016, 05:30 AM #7
the other thing you can do is simply embed a metal nut.
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01-21-2016, 08:15 AM #8
All the screws holding the quad together in my orange quad Avatar are screwed into 3d printed PETG.
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01-21-2016, 09:15 AM #9
This thread reminded me that I wanted to get some threaded inserts.
I have alot of M3 screws for my RC hobby, so I got a bunch of M3 inserts from HERE just now.
Should be fun to incorporate into printing projects.
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01-21-2016, 12:32 PM #10
easier to just make a hexagonal/octagonal (can't remember) socket for an m3 nut.
New to 3d printing looking for...
05-20-2024, 12:56 AM in Tips, Tricks and Tech Help