Nắp che Ice-Screw (Ice-Screw Cap / Cover)

I lost the cover cap of my ice screw, here is a replacement.

The ice-screw type is: Laser Speed Light from Petzl

Note:

• I printed it in TPU for extra durability, but it also works with hard materials like PLA, PET-G, etc.
• The slope of the thread on the screw is 6.3 mm per turn
• The friction to not lose the cap again is generated by the slope on the thread on the cap which is 5% shorter than the thread of the screw.
• The hole at the bottom side provides a way to tie the cap to the screw with a cord. The hole has a diameter of 3mm.