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Discussion Starter · #1 ·
I have made a leering skeleton that has worked for about 2 days and now is constantly unscrewing itself at the pivots.

Here is how I make my pivots.

Product Line Diagram


picture of the mechanics

Tree Grass Plant


video of when it stays together and the mechanics running.

 

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Funeral Crasher
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7,469 Posts
When I make the pivots on any prop I build, I always use the [Nut-Lock Washer-Nut] combo on EACH SIDE of the moving part.
I tighten the first nut loosely against the moving part, hold it in place with some needle nose pliers, then add the lock washer and the second nut. Tighten the second nut (while holding first nut in place). Then repeat on other side of moving part.

I've never had one come loose yet.
 

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Registered
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4,268 Posts
When I make the pivots on any prop I build, I always use the [Nut-Lock Washer-Nut] combo on EACH SIDE of the moving part.
I tighten the first nut loosely against the moving part, hold it in place with some needle nose pliers, then add the lock washer and the second nut. Tighten the second nut (while holding first nut in place). Then repeat on other side of moving part.

I've never had one come loose yet.
That works too but the nylon insert lock nuts are easier.
 
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