[QUOTE="flash"] I have a cheapo angle grinder that requires a special tool, basically a strip of metal with a couple of prongs, to change the discs. Obviously I have long since lost the special tool and it now resides with all my chuck keys and other vital bits of kit. Does any one have a clue how I can remove the disc without the tool?[/QUOTE] I'll send you one of "me 'ol mums" famous chocolate sponge cakes. 5 mins of trying to cut through it should break the disk.