Got a pic to upload finally so i can show off my M10 nut gun. Mine shoots 7/16 nuts, and is made from mid-grade 1/2 inch plywood. I'm not sure if I can praise this design enough. It is truly distilled genius. Making it has been an education in itself, too. Things NOT to do if you build one: Use too long of screws and just hit them with a grinder after assembly --they will always leave a snag spot until you disassemble completely, shorten each screw, reassemble, and then fill the holes this leaves. Use the right length or shorten them ahead of time. Hurry through preparation of the guide screws --these will eat all of the work put into sanding the slots with one pass unless they are perfect. I plan to rebuild it with 1/4 inch shoulder bolts. Test the gun before installing a keeper magnet to the slide --mine went off half-cocked, and ran the pump forward, blowing it nearly apart. Many other lessons too, but this is becoming a book. Thank you Joerg for the generous gift of this design+tutorial and thanks Brian for the excellent prints.