CNC Construction Set Test Pen Tube Kit

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CNC Construction Set Test Pen Tube Kit

$14.95

This is a set of brass tubes used to hold a expo marker for tuning the CNC Construction Set. The instructions are included in volume 2 of the book.

Please note that these are the cut tubes only and will have to be sanded and deburred which is covered in the book.

Includes:

  • 1/2” OD, 15/32” ID x 2-1/2” Tube

  • 15/32” OD, 7/16” ID x 2-1/2” Tube

  • 7/16” OD, 13/32” ID x 1” Tube

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