Small triangular grip for pen/pencil fits basic pencils/cheap pens. Designed it on my phone at work and decided I liked it enough to share it.

Print from flexible tpu

2 walls 4 top/bottom layers

15% gyroid infil for a very firm grip

15% rectilinear or line for a less firm grip

Prints vertically with no supports necessary

All my prints were done on the Ender 3 v3 KE with an 0.4mm nozzle

If the hole is too tight feel free to scale up the part slightly or clean it out with a drill by gently pushing it through the gripper by hand while turning, the hole is dimesioned around .300" or 7.5ish mm.

The v1 is a solid triangular design and the v2 has grooves on all sides. The v2 is also a little easier to get onto a pen/pencil as a result and is my preferred version.

Feel free to experiment with infill/walls/scale etc.

Do whatever you want to with the files/models themselves.

CC0