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Long EZ Mold Construction - Question

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Nims11

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Nov 8, 2014
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I read much of the very informative sticky on composites, still more I need to read. But I have a question about why one can't use molds to construct a Long EZ. It was pointed out to me by a friend that a significant portion of the time it takes to build an ez is in the finishing of the fiberglass, the sand and fill process. But by using a mold and vacuum bag technique you do not have all that finish work. Firstly is that correct? And given that it is said an ez takes about 4000 hours for the average builder to complete then what percent of that time is the finish work? Would it be a significant savings in time if you did not have to do it?

My thought was that you could use a CNC router, or 3D printer to make the mold very easily.

Could the reason be that this process in not used is that it is more difficult to bond the glass skin to the foam?

Thanks.
 
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