WE've painted 1000's of machines over the yrs & we found out paint remover will not remove Singers paint off the machine,the best thing to do is just sand it,we use a belt sand on the bed & lightly hand sand the rest to smooth it up put on a couple coats of primer sand lightly again & paint.Don't forget after you sand to was the machine down good with someting like alcohol or wax remover of some kind because of all the oils so the primer adher properly.