On Mar 6, 4:31 pm, Andy Dingley wrote:
On 6 Mar, 16:25, JimK wrote:

angle grinder

With a plastic scouring pad "paint remover" disk. Just watch not to
catch the edges, as the disks are quite flimsy.

well they're OK if the surface is flat....

flapwheel on a drill/dremel if not?

JimK