Free 3D-printable models designed by Zheng3
Printrbot Z-Axis Knob

Thanks to Bill Owens for the original.

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I find myself adjusting the height of the Z-Axis on my Printrbot Simple with every print, sometimes during the print itself. Handling the leadscrew directly can get a little uncomfortable, so having a knob attached to the top of the axis helps a great deal.

This knob is based off Bill Owens’ Printrbot Simple Z-Axis Knob which is in turn based on jridley’s Parametric hex head screw or nut knob.

It has rounded edges, some transitional elements between the two major volumes, and a graceful inverted flare on the shaft. These are completely unnecessary aesthetic changes to the perfectly-usable model made by Mr. Owens, but since complexity is free in 3D printing, why not.