Car appreciation... the aesthetics, the engineering, etc

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Nahguavkire

I still have my doubts about how long these brass inserts will stay snug in the plastic without some sort of bonding?

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mcmyk in reply to @Nahguavkire

As you wind a bolt in the knurled section expands to grip the material you inserted it in.

You can also drill the hole for them slightly under size and push them in with a soldering iron so that the plastic melts locally into the knurled section if you’re so inclined

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