This is a knurled knob that will fit on the nut holding the Z Axis on an Xcarve upgrade of a ShapeOko2. The nut is an M6 so it should fit both the standard lead screw implementation or the ACME screw. In my case I upgraded my ShapeOko2 to an Xcarve with an ACME screw on the Z Axis.
This is not a difficult piece but I wanted to learn how to knurl the surface in Fusion 360. I am happy how it came out on the first try so I though I would share.
Printed with a .4mm nozzle using basic settings at 10% on a Rostock Vmax 2.