I do own a Jazz but this isn't to do with it.
I messaged Ebay seller but no response.
I'll explain I'm learning surface etching sandblasting glass, multi level carving into glass.
Part of the process, I have a vinyl cutter, plotter to cut the resist, mask pattern that goes on the glass. To show up the cut lines, on white vinyl that the machine makes. I mark them with a black grease wax pencil, chinagraph pencil, prior to weeding the vinyl shapes. I'd wrap the foam pad in cotton I see there are different grades of foam, some harder than others. Obviously I don't want something that is rock hard. Round and 85mm is a convieniant shape and size. I grasp there are differernt types of hardness for these pads. Seller describes his as, " Purple Foam Medium-Heavy Cutting Polishing Pad 85mm Small.
What I would like to know is which type, grade of pad would suit the job I want to use it for?
Cheers.