I have the transfer punches as well. The primary difference is the transfers are used on through holes as you described, the spotters are used in a closed hole where you can't use a punch.. On a budget, get a screw the correct thread, cut the head off, chuck up in a drill and use an angle sander to make the point, then screw into place. The spotters have a better point than I can do on the lathe, though.. :LOL: