Graver Sharpening Fixture

thingiverse

I've designed a graver sharpening fixture that's similar to commercial ones. It uses MakerBot's Replicator 2 printer with these settings: Printer Brand: MakerBot Printer: MakerBot Replicator 2 Rafts: Doesn't Matter Supports: Yes Resolution: 0.15 Infill: 50 The post-printing process involves adjusting the front dial and graver clamp. On February 8, 2017, I printed both parts with good results, and the lines for the 5-degree increments came out nicely. The threaded brass inserts and M4 bolts fit well on these parts, holding the tool steel securely in place. However, one issue is that if the holding screw on the graver clamp is over-tightened, it can split plastic. I've since edited the model to have thicker walls at this point. On February 13, 2017, I printed the first part of the frame, which came out well despite my print lifting from the bed slightly. This part fits together well with the dial front and M4 bolts and threaded inserts. Tightening the screw holds the dial in its desired position. The finished prints were completed on March 3, 2017. The first part of my frame came out bowed, so I plan to reprint it at some point. However, the design works well, and I've used an old dermal drill stand as a base. Its post is 16 mm in diameter, but I'll upload the 123D Design file so others can edit it to suit their needs. I've created two gravers using this fixture so far, clamping them to my drill press and using diamond lapidary discs on an arbor. To use this design, you'll need M4 bolts and embedded nuts. You can find the necessary parts on eBay: M4 x 8mm female thread brass knurled threaded round insert embedded nuts M4 bolts (20mm and 30mm)