Loved the simplicity. Remodeled for threaded inserts, and thicker walls.
Requires two M3x6x5mm threaded inserts for the print-head attachment, and one M3x4x5mm threaded insert for the pen clamp. I bought them a while ago but never had a project for them, till today!
I'd suggest 3-4 walls to support the inserts.
Pen_Holder_v3_Sharpie.stl | 101.3KB |