63, 180 is wrong 9" wide flat, we could approximate 7" contacting the mold when inflated (to be safe, I think it will be less). Assuming every inch of the 78" contacts the mold you'll have 78in x 7in x 45lbs/in^2 = 24,570 Long story short, if you didn't engineer your press to handle t...

polyamide is substantially better than UHMW

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You need to use tangent arcs or get good with beziers. I don't know anything about TurboCad, but all the big name manufacturers use beziers to design all their skis. Tangent arcs work, but you'll have strange continuity from radius to radius. That said- it's hard to do, and it's the main reason I ca...

I was thinking about making some PVC sidewalls instead of UHMW because I have some available. Any drawbacks or advice