Pen holder for a CNC plotter

Clamp for a modified ballpoint pen


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A simple clamp to fit in place of a spindle on a CNC router. It is intended to hold a modified ballpoint pen.

See my blog for more details:

This is for use while testing the machine rather than having to cut anything.

Materials and methods

1x M4 wingnuts
1x M4 A type (standard) washer
1x M4x40mm bolt


  • Placeholder
    Plotter Pen Holders Licence Small Business
    TXT  β€“  1.4 kb
    Version 2 - Aug 13, 2019
  • Placeholder
    Plotter Pen V41 Stl Step F360
    ZIP  β€“  3.8 mb
    Version 1 - Aug 13, 2019


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F6ef79dab4241f4dbea1bf13e02a9e46?default=blank&size=40Fraudrin68 added this to the Cnc collection ago
0592e92f50010d5abf34a408bf416747?default=blank&size=40redpaul6t8 added this to the Things to Make collection ago
Mini jcb tooey2016 10v650x650John published this design ago