Try a blade, file or sandpaper if it's just paint, or go to a shop, ring ahead because a lot of places won't do it enough to warrant buying the tool which is why you shouldn't buy it either. Maybe cyclo or VAR do a cheaper one but it's still going to be more than getting someone else to do it on probably more bikes than you'll ever need it for.
Try a blade, file or sandpaper if it's just paint, or go to a shop, ring ahead because a lot of places won't do it enough to warrant buying the tool which is why you shouldn't buy it either. Maybe cyclo or VAR do a cheaper one but it's still going to be more than getting someone else to do it on probably more bikes than you'll ever need it for.