I made this for my Shapeoko to test my gCode was being correctly generated and interpreted.

Useful for holding a pen when getting started, testing gCode and calibrating Shapeoko or other CNC projects that use Makerslide.

To complete this you'll need the following:

4x Makerslide T-Slot nuts 4x M5 x 10 machine screws 2x M3 x 12 machine screws 2x M3 Nuts 4x M3 washers

Someone might like to take the .STEP file and turn it into a parametric openSCAD file so different size pens can be used.