This is a story about how I overcome a simple problem of jigs falling apart while I’m using them.

Since I’ve moved from machine tool access in industry and retired to a little shed in the back yard, all the boats I have built have been constructed primarily using hand and minor power tools.

Occasionally when I need to connect pieces (like the following example) it has meant knocking up a simple jig connected to an electric router to effect multiple/accurate joints or shapes.

The problem I’ve found that when jigs are constructed like this, they may need to be stored and reused over time, the stress of bolt and nut through the chassis to a wood frame often comes loose at the wrong time. The wood being compressed and allowing the vibration to loosen the nut.

Q. why does it not tighten the nut?

My solution (that has never failed) is to use Nylon Inserted Nuts to lock the bolt in place.

RR1    RR2    RR3

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