Low Profile CNC Clamp

thingiverse

This project shares similarities with low-profile CNC clamps available on the market, but I aimed to create an adaptation specifically designed for use on my CNC waste board featuring insert nuts and dog holes. I plan to print this design over the weekend and will provide an update as soon as possible. The clamp is tailored to accommodate 6.3mm pins in various materials, and I'll be using aluminum for testing purposes. A M5 bolt is used to move the toe component downward, requiring a nut for secure fastening. I've designed the hex hole with sufficient tolerance to fit a 7.8mm wide hex nut from the front side, eliminating the need for glue. The slot allowing for positioning adjustment can accommodate bolts up to M6 in size. Many CNC waste boards, particularly those of the X-Carve style, feature M5 nut inserts. I'll post updates as I progress with the design. **UPDATE** Today's print on my Prusa Mk3S was a success. I utilized two 35mm pieces of aluminum, each measuring 6.3mm in thickness for the pins. A single M6 16mm bolt secured the base to my waste board, while an M5 25mm long bolt tightened the toe. However, the recess around the M5 bolt hole on the toe was too small to accommodate the bolt head, prompting me to consider removing this feature altogether. The clamp's holding power proved exceptional when used against a couple of bench dogs; it wouldn't budge. This suggests that these clamps will be more than sufficient for CNC applications. I'll attempt a live cut tonight. **2020 UPDATE** I've uploaded the Fusion 360 file for these clamps, but please note that the design process may appear disorganized due to my lack of experience with Fusion at the time. Feel free to revise or modify the design as you see fit.