What is more expansive, a positive or negative mold ?
Maybe a skilled person could built direct in negative, without need a positive first.
How create transparent parts, like the dome in this photo ?
I bet it need help of some industry, to heat and shape plexiglasshuge sheet pressing it against a mold.
Quote:
Originally Posted by Piotrsko
Actually Burt Rutan suggests vacuum bagging using some material that doesn't stick to the resin. The resin conforms to the skin giving smooth shiney. Between layers use a woven cloth for built in "tooth"
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