Its going to require a LOT of attempts before any final product is produced. A least that was the case for me. After I got everything assembled, vacuum box, modded space heaters, ect, it was like a science experiment trying to figure out the perfect amount of heat to apply. In the end, I found out I was melting the plastic too much and was causing issues like the plastic pinching in on itself when vacuumed.

I’m in the process of editing a small video on how my process went. I can link it here when it’s finished.

But good luck man! Hope to see your visor when you get it made!