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Mini Lathe gear.  

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MartyS
(@martys)
Trusted Member
Mini Lathe gear.

Was cutting some brass on my mini lathe and brass being brass it grabbed the tool and brought the little lathe to a halt.  Breaking one of the teeth on the high-low plastic gear, and of course it was the gear on the spindle requiring the most amount of tear down possible to replace it.

Grabbed an stl of the gear off thingy and printed it in polymaker PC max, took about 5 hours, should be stronger than the original.

If this one ever breaks I'll break down and spend the $70 for a set of metal gears.

 

Printed mini-lathe hi-low gear

Posted : 04/09/2021 6:41 pm
karl-herbert
(@karl-herbert)
Illustrious Member
Mini Lathe gear.

May the plastic wheel outlast the machine 👍

POM (Polyoxymethylene) would be the suitable material for such applications, but it can be more easily molded or milled than printed.

wbr,

Karl

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 04/09/2021 9:27 pm
MartyS
(@martys)
Trusted Member
Topic starter answered:
Re: POM

The original gear does say POM, but I can see odd patterns in the surface from when it was molded so not sure how good a gear it was to begin with.

One way to be sure the printed gear lasts forever would probably be to order the set of metal gears now. 😋 

Posted : 04/09/2021 10:43 pm
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