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Old 14th October 2017
Petrochemist Petrochemist is offline
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Re: Sad loss of rigidity (macro flash arm)

The arms used in that are made to supply cutting fluids to precise locations in metal machining. It's possible to take them apart at each link & get new sections (I've seen them in 2 diameters in Radio Spares & they're probably also from many other sources). I think the end sections have just been epoxied into the tubes.

We used to use the wider section version for holding sampling tubes in awkward locations, but also found that they weakened till they couldn't support their own weight.

I wouldn't be surprised if the tubing on the cheap versions doesn't actually come from exactly the same source as on the expensive ones!
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