300BLK 2" Saw Jig

thingiverse

V1 is designed to cut 223/5.56 brass so it can be formed into 300 blackout. It cuts the brass to 1.39"-1.40" on a 2" mini chop saw. V2 needs no support, has a plunger to push the brass off the fixture after it is cut and it shortened the cut length to 1.37"-1.38" for less trimming. V3 is further refined jig thanks to ummmbilly's make inspiring improvement. The plunger uses two AR15 magazine catch springs and has a cap that threads into the shaft to keep the springs enclosed. The brass clamp is the same for all fixtures. The locating pin is the same on both the V2 and V3. The other parts are fixture specific. Print Settings Printer Brand: SeeMeCNC Printer: Rostock MAX Rafts: No Supports: No Resolution: .2mm Infill: 40% Notes: All jigs require an AR-15 Buffer Retainer Spring to work for the brass clamp. (.19" dia x .92" long) V3 is designed to use two AR15 magazine catch springs on the plunger rod and one m3 SHCS to hold the plunger cap on the rod. Remove the factory vise from the chop saw and place the fixture's locating boss into the hole in the saw's base. Place the thumbscrew through the fixture and thread it with the nut in the saw base's bottom groove. Align it square with your eyes. Place the clamp in the slot clearance pocket and slide it forward within the rails. When installing the clamp in the fixture, orient the dovetail so it will be touching the brass. Place the spring in the pocket and you are ready to trim brass. Post-Printing