Roller Bearing Mk 2
Well, that didn't take me as long as I thought. The 50mm Pressure PVC Solvent Weld Coupling is 70.7mm long and 70.7mm in diameter with and internal diameter of 60mm, which equates to 5mm walls. Slightly larger in diameter then I want but it will do.
Process was pretty straight forward, part the 50mm Pressure PVC Coupling in half on the lathe. Marked and drill 4mm below the top edge out to a diameter of 8.5mm, added a couple of 4.5mm spaces and jobs done on Mk 2.
Roller Mk 2 work very nicely and looks solid compared Mk 1, probably pin the axle into place which should be straight forward on the drill press.
P.S. Having the correct tools make the job easier.
Cheers
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