How to change tools on a Mini CNC Milling Machine with Chillipeppr

I have a cheap generic CNC mill that I got from China. It is one of my favourite tools, I use it to fabricate small parts out of plywood and acrylic and for routing circuit boards. I’m getting to the stage where I sometimes need to switch tools in the middle of a job. Usually when I’m making a circuit board (different tools are used for etching out the electron footpaths, vs drilling holes for other parts).

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