FFP mask holder for ski helmet

A FFP2 mask holder for the ski helmet. 

The mask holder consists of 3 parts (see cross-section image). Two parts (A and B) are mounted on both sides on the chin strap of the helmet. A 12 x 3mm magnet is inserted before mounting with 2mm screws.
The third part (also 2 pieces) is attached to the straps of the FFP 2 mask. A 12 x 1mm magnet is integrated into this part during printing. To do this, insert a corresponding pause. 

Note: I had problems with the pause when I started the print via Octoprint. In that case the nozzle temperature remained at 0 after resuming. If in doubt, slice it yourself.