As per title; I have 3x 1.5m aluminium tubes with an ODD of 50mm and WT of 1.6mm that I need to join back together pretty sturdily to make a photography boom for a project. Given that the internal diameter is 46.8mm, I don't think I'll be able to find any tubing that fits snuggly inside so my thought was to thread both ends and have some couplers made.

Does anyone on here do that kind of work, or know anyone that does??

Cheers

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Ryan