Heated Bed Thumbscrew

by 3dSuppli, published

Heated Bed Thumbscrew by 3dSuppli Mar 9, 2013
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Created using the OpenSCAD script by jridley, this object has been optimized to serve as a thumbscrew to hold an M3 nut on the underside of a heated bed. It is also a thin as practical, so that the heated bed needs a minimum of clearance (giving you the largest possible Z height).

I use 4 of these per MendelMax 1.5 printer.


  1. Simply download, print, and enjoy.

If your specific thumbscrew requirements are different from those used in this object, I recommend downloading jridley's OpenSCAD script and playing around with the values to get exactly what you need.

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I spent quite a bit of time with jridley's script, printing out lots of different thumbscrews until I came up with these. I like this version that I came up with - specifically because I don't end up needing the extra bridging layer that you get with jridley's script (the bridging comes out just fine); plus these thumbscrews are thin enough to work with a single M3 nut on a MendelMax 1.5 with the Y carriage barely clearing the frame; and the pronounced ridges make it possible to tighten these thumbscrews with just a single finger (or thumb). Other knurled knobs or thumbscrews with less pronounced ridges didn't work as well for me, but obviously YMMV.