Lamp Knob

thingiverse

I've got a lamp with a switch that's been driving me nuts because of its smooth knob. Every time I try to turn it on, I end up shoving the whole lamp down instead. That's why I was thrilled to find this chunky knob that gives my big hands something solid to grip onto and prevents the lamp from taking off. The rotary switch stem has a diameter of 6mm, and while I didn't include any knurls on the inside of the knob, it fits snugly over the stem without slipping. If you need to adjust the size of the stem, you can tweak the cylinders and cube under "Cut003" in the FreeCAD file.