Hapstone Scissors Attachment for M2, V7, R1, R2, M3 and V8

thingiverse

This is a scissors sharpening clamp attachment for Hapstone sharpeners. I have designed different versions for each of the M2, V7, R1, M3 & V8 models. The R1 version of my design also works with the Hapstone R2 / M3 / V8 machine. I highly recommend a strip of rubberized tape (I use ISC Racers Tape / Helicopter tape) for the insides of the clamp for a very secure grip. To install, remove the current adjustable knife guide from your Hapstone table (Or remove your rotating clamp assembly if installed), and replace it with my platform. Screw into position and tighten. The clamp part of the scissors attachment can be used as follows: Simply place your scissors blade in the top portion of the clamp, and then tighten the bottom screw. The bottom screw should only have a brass insert on the inside of the small clamp, so it causes a cantilever action and opens the bottom of the clamp up when you tighten the bottom screw, effectively forcing the top closed nice and snug on your scissors blade. The top two screws are only for lightly holding the scissors blade in place and positioning it, after which you tighten the bottom screw which then cantilevers the top of the clamp to grip the scissors blade tightly. I designed the clamp attachment with a magnetic base for smaller flat ground knives. The magnet size is round 12mmx3mm. I also included a photo of my Edge Pro version attached only for reference. To operate the scissors clamp, you will need 2 x M4 screws and 1 x M4 thumbscrew. If you are printing my combined scissors & knife guide combo, then you will also need 1 x M4 thumbscrew and brass insert and 3 x 12mmx3mm round neodymium magnets. I tested the R1 version of my design with the Hapstone R2 / M3 / V8 machine. I highly recommend installing M4 brass threaded melt-in inserts for the 2 holes in the platform side of the clamp, as well as a M4 brass threaded melt-in insert into the larger bottom hole of the small scissors clamp. Note: The V7 version might work on the Hapstone V5 and V6, but I have not tested them. Please let me know if it works for you. Brass Threaded Inserts Example: https://www.amazon.com/dp/B07MWBJB67/ref=cm_sw_em_r_mt_dp_U_Ho0bEbPPA9P23 Some of my other useful designs can be found on Thingiverse at: https://www.thingiverse.com/leadingedge/designs