hamster":3aybar31 said:0.8mm of shim isn't very thin at all.
Quite. Aluminium drink can walls are generally around 0.1mm. You're gonna need a lot of wraps to make up 0.8mm.
If you repurpose a different sized shim, try to get one that "fits" the thickness requirement pretty closely. I'd strt being worried with anything above a 0.05mm radial gap.
This one might do the trick, its bang on, thickness wise : https://en.hollandbikeshop.com/bicycle- ... m--26-6mm/
If you're worried about the extra gap, buy two and slit them lengthwise, use two slightly-more-than-half shims