Lens holder for camera bag

This is lens holder (cup) for camera bag. Its internal diameter is 75mm, so it holds small lenses - it was designed for old manual lenses (rokkors, tokinas, pentacons, etc.).
I'm printing cups in 0.35mm resolution, joint stick in 0.15-0.2mm (100% infill).

Warning! This design was not tested yet.

Update 06.12 - I've made joint stick little bigger, so they are very tight. I printed 3 cups and now 4th is in progress. Later I will upload photos. 0.35mm resolution produces weak prints on my k