Domes, molds problem, question

Thanks for reply. You asked good question about “like an IIC”. Yes, 1 inch mold is long. The examples of long molds (YMMV, you may be not anatomically elegible for that):

https://forum.hearingtracker.com/t/phonak-audeo-p90r-quality-control/91896/5?u=bimodal_user