The disc sander on my Draper belt & disc sander has been slipping. I thought that this was the belt sander but tightening the belt had no affect. I then realised that the disc itself was slipping on its shaft.There is an inspection hole in the belt guard and I can see a socket headed grub screw but my allen keys are too short to reach. Screwfix mention long allen keys in their catalogue but how long is a long allen key?
Thanks
Kevin