PCB Clamp for Milling PCB
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A clamp to hold down PCBs so you can mill them on a desktop CNC router
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution
This is a hold down system to clamp PCBs. I use it on a Genimitsu 3018 to mill PCBs. It seems to actually work pretty well, and as a bonus there's a void underneath the PCB, which helps when drilling holes.
You will need:
- M5 T-nuts (these came with my 3018)
- M5 Bolts (40mm)
- M3 Nuts
- M3 Bolts (12+mm)
Print out 2x of bottom clamp, then mirror it along X and print out 2 more. This will let you form a square out of the 4 bottom clamps. Also print out 4x washers, which are used on the M5s.
Using pliers or whatever method you prefer, shove a M3 nut into the opening on the bottom clamp. This is a captive nut that will hold down the top clamp.
Now print out 4x of the top clamp. Use a M3 bolt to secure to the bottom clamp and you can mount your PCB in there.
I have printed with PETG / PLA, both seem to work just fine. I mill 100mm x 70mm PCBs but since these slide around you can mill all kinds of sizes.