I've been putting together a wet belt sander recently so I can finally do a little sanding and polishing on glass made in my little studio. Starting with a cheap piece of shit no name belt sander, I lightly sealed the bearings, added some shielding and a splash reservoir, installed a water pump with a valve and sprayer and relocated the motor and electronics. Now I just need to find some good belts. Know of any granite working supply shops in Japan?