Having finished my home switch project for the CNC mill, I started thinking about what my next project ought to be. I wanted something simple but very useful that would combine a little CNC with a little welding and fabrication. A tapping arm is perfect for that task as I was reminded when reading a recent thread of Hoss’s over on the CNCZone. In case you’ve never seen a tapping arm, they work like this:

[youtube=http://www.youtube.com/watch?v=FZLU-F9wcS0&hl=en_US&fs=1&]

I’ve had one in the planning stages for a while, to the extent that I have a page devoted to it. It should look something like this when I finish:

Tapping Arm in Rhino3D

 

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