This is the simplest and best answer. Works great. Don't have to have a drill press, you can just screw it to your workbench. Roll crimps are great but leave a LOT less material than you think you will need. You will compress everything with the pressure you apply, and if you put too much roll they open funny and are not reusable. I do not have to hold mine in my GAEP jig with anything other than my hand and then that's just because I choose to. It is "rough" on the inside and the hulls do not spin.