Spring loaded bit | PCB solder mask milling | CNC3018 

DIY cnc cnc3018 3018 pcb milling routing printed circuit boards prototyping solder mask milling
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Thingiverse-Link: www.thingivers...
How-To:
for milling solder mask off a custom PCB you have to spring-load your engraving bit. So the pressure is high enought to mill the solder mask (UV-resin) off the PCB- but not strong enought to mill trought copper.
You need:
- ER11 nut
- spring from ballpoint pen
- 3-d-printed holder and connection
- 90 degree engraving bit
For questions please write a comment. I will answer as soon as possible.
If you need CAD-files please feel free to ask.
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Music: www.bensound.com