Ive scored some whoop-dish *were described as* ronal 14s for less than the price of a Steak Sandwhich but they need a bit of work.
The centres and rubber is all well enough to leave alone, but the dishes are very crusty. (see below)



and obligitory 'something jammed in the dish' pic

Any sugestions for cleaning up the dish?
I have a Dremmel, time and the ability to purchase other cheap products.
Ive heard wire wool, sandpaper, etc etc but would appreciate any advice from those that know.
Cheers everyone.
have a great Bank Holiday Weedend!