Adjustable height toggle toggle clamp for light weight CNC milling etc. The pins are push fit in to assemble, I used a vice to force them in. The clamping arm has a hole for a 0.25" threaded rod to allow for height adjustments. The hole is sized such that the rod will thread into the print, but there is also a recess to hold a nut captive as well. The base has a hole allowing for a 0.25" screw to attach the clamp down to baseboard.
Print the plate.stl file. You should change the infill based on how strong you need the clamp to be.
Press fit the pins to hold everything together, I used a vice to do this.