I do a lot of body work so the tools arent the problem with the old extractor I have. Thge problem is that it wasnt even rinsed after its last use. There is a crust 1/8th of an inch of more covering the inside AND the basket. The top o the crust is HARD, but under it is nasty softness that seems specifically designed to gum up sand paper and grinding disks. I have scraped a lot of it out already, what remains is just ugly, but i will figure something out!!!