Recently I decided to take the plunge and buy a 3D printer. I've been looking at them off and on for the last two years and I keep coming up with jigs and tools that would be easy to make if I only had one. What I bought is a Creality CR10 V3 Titan Direct Drive printer with a 300mm x 300mm x 400mm print capacity. For my first project I decided to take some cheap but well made Chinese 201-B hold down clamps and adapt them to be used with 1/4-20 T-Track with a 3 piece 3D printed base. I calculate that the total cost per clamp at $3.45 per clamp. Because I used this as a learning project I printed them in both PLA, (black) and PETG, (red). I was really pleased how they turned out. If you have a 3D printer and would like the .stl files I'll be happy to share. I designed these in Sketchup and exported them to .stl files using an export plugin from Simlab. (The demo version gives you the first 30 exports for free.)
Attachment 454296 Attachment 454297 Attachment 454298 Attachment 454299 Attachment 454300
The main part that attaches to the clamp is tapped with a M6 6mm metric tap and attached with 4 M6 x 8mm hex cap screws, the base plate attaches with 4 #6 x 1/2" wood screws and the 1/4-20 x 3/4" bolt and nut are used with the center wheel to tighten or loosen the connection to the T-Track.
With the amount that the base raises up the clamp the thickest material you could hold down would be 3/8" or 10mm without having to add a longer hold down pad but I'll mostly use them with 1/2" or 3/4 material so that likely won't be an issue for me but you can make longer pads using rubber furniture feet, 1/4 - 20 or 6mm threaded rod a couple nuts and a fender washer. The ones I've made I use a cap nut and a regular nut with a star washer.
