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Tmuir

Where to buy brass tube for mainspring barrel

Question

On careful examination of the mainspring barrel from my fusee clock today I found 2 more cracks I had previously missed and these are serious ones, the go right through the brass and extend down the side of the barrel for over 10mm and start from the slots where the sire will sit so to play it safe I need to make a new barrel.

The outside diameter of the barrel is 54mm, so I need to find some thick walled brass tube just slightly bigger diameter than this that I can use to machine a new one.

I've never needed to buy brass tubing that large before and all the palces I can think of that might sell it don't have any.

Has anyone got an idea where I could buy some from?

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Ok, I've answered my own question.

http://www.iantcobb.co.uk/

They sell 2 1/4 inch (approx 57mm) brass tube 1/8 inch think.

Whilst my barrel is only 1.5mm (approx 1/16 inch ).

So my barrel has an inside diameter of approx 51mm, and the tube in the link above has approx 3mm thick wall will also have an ID of approx 51mm.

Might as well order some more brass sheet whilst I'm at if for the barrel caps too

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