Here's how vaccuum bagging is done in the rocketry hobby... but the same ideas can be applied to teardrops!
http://www.info-central.org/constructio ... ging.shtml
Mike...
Foam Sandwich Construction
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by asianflava » Tue Aug 17, 2004 4:19 pm
Thanks Mike I wanted to glass one of my rocket body tubes but wasn't shure how it was done without collapsing the tube. I haven't seen that page before.
I did find a page http://composite.about.com/library/weekly/aa000109.htm that explains more on the on the materials needed.
It should be noted that most of the commercially available materials can be substituted with hardware store items.
Some people may be asking, "why don't you glue it up then put weights on it?" Bagging achieves the same thing but it applies an even pressure on the entire surface. It will "only" put 14.7psi on the part but on a 4X8 sheet of ply, that would equal to almost 34 tons of weight!
I did find a page http://composite.about.com/library/weekly/aa000109.htm that explains more on the on the materials needed.
It should be noted that most of the commercially available materials can be substituted with hardware store items.
Some people may be asking, "why don't you glue it up then put weights on it?" Bagging achieves the same thing but it applies an even pressure on the entire surface. It will "only" put 14.7psi on the part but on a 4X8 sheet of ply, that would equal to almost 34 tons of weight!
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asianflava - 8000 Club
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Do ya think I coud build a trike car with a tiny trailer to match??? Oh No!!! 
