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I have some height-adjustment nuts screwed onto vertical threads to support my print-bed for a 3D printer. They are domed nuts and the aluminium build-plate sits on top of the domes, three holes in the plate align with the domes to hold the plate in place.

How can I protect these nuts from vibration loosening without using thread-locker or similar, so that they remain adjustable?

jhabbott
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1 Answers1

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Double nutting can be an easy option for this.

I was about to describe it myself, but these folks do a great job.

This image, from the article, models the forces that do the job. Take note of the contact surfaces between the threading of the bolt, in the top vs. bottom nut:

force model for double nutting

Air
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Dan
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