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capture nut vs threaded part

Posted by lpbug

lpbug

capture nut vs threaded part
February 08, 2014 01:52AM

Registered: 10 years ago
Posts: 5

I see that on the Prusa i3, the z axis movement is translated by a M5 hex nut from the actuator. If I am making my frame pieces out of aluminum, would threading the part instead of using a capture nut work just as well? Anyone tried this or see any potential problems with it?

Thanks

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lpbug

Re: capture nut vs threaded part
February 09, 2014 12:23PM

Registered: 10 years ago
Posts: 5

Bump

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NewPerfection

Re: capture nut vs threaded part
February 10, 2014 01:43PM

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Registered: 15 years ago
Posts: 1,470

It should work. Only problem I can see it that standard threaded rod is somewhat rough, and would wear out the plastic threads relatively quickly.

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jkoljo

Re: capture nut vs threaded part
February 10, 2014 05:53PM

Registered: 11 years ago
Posts: 117

I think OP is going to cut the threads into aluminium. It will work for a while, but I have noticed that I have to change the nuts in my printer every half a year of intense printing. So when the threads wear out, it would be easier to change only the nut, not the whole part. So either use a captive nut or threaded insert.

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NewPerfection

Re: capture nut vs threaded part
February 10, 2014 07:36PM

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Registered: 15 years ago
Posts: 1,470

Yep, I somehow missed that he was going to use aluminum parts. I would still think that wear would be a problem.

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