Lamp Knob Replacement -- Adjustable Hole Size

The original found at https://www.thingiverse.com/thing:294202 had a hole way too small for my lamp. I drilled it out with one size bigger drill bit each time but the size I needed was in between my bit sizes. So was either too small or too big.

So I remixed this in OpenSCAD so the size of the hole is adjustable.

Open the .scad file in OpenSCAD and change the value of the "holeSize" at the top to the size of your threads (in millimeters). Then press F6. Then export to .stl. When you open t