Q.F.C. Bic Holder

thingiverse

I just use a simple Bic holder, but other pens and pencils also work well. You'll need some M4 screws to secure the pen in place. Using just a flat piece of glass over the ultra base and leveling it manually, I was able to create simple drawings. The pens are not too stiff, so placing the holder as low as possible will help reduce flex. Print the holder in the orientation you plan to use it. This means printing it on its side with the hexagonal hole facing down and the writing area in the correct position.