Originally Posted by
Neil Miller
I think there are two types of wheel rake, one with strips of steel like crocs teeth and one like a stiff wire brush. The brush is much less aggressive.
I sometimes use an old glaziers tool for getting old putty off window frames. It looks like a knife with a thick, stout blade with a bit of leather rvetted both sides for a handle - works really well, kind of like a tiles edge but no chance of shattering.
Regards,
Neil