OpenBuilds Pen Holder

This is a simple pen/pencil holder that is compatible with the OpenBuilds 71mm spindle mount. I had issues with a bunch of other designs, so I decided to make my own.

There are 2 different STLs, Pen_Mount.stl is for the side screw mount, and Pen_Mount_Front.stl is for the front mount. M4 nuts and 8mm M4 socket head cap screws were used for the grub screws, and 8mm M5 button head screws were used for the side mount. The front mount can re-use the provided OpenBuilds M5 screws.

For some r