| Re: [GMCnet] Why not just build new ones? [message #154391] |
Sun, 25 December 2011 23:54  |
sgltrac
Messages: 2797
Registered: April 2011
Karma:
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Senior Member |
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I believe that fiberglass casts evolve over time with gravity/curing/shrinking as voc's leave the resin and their shape will take a set in whatever static rest they end up in after leaving the mold. Also, making a mold of a finished part will yield a slightly smaller finished part than the part used to make the mold due to shrinkage during the curing process. I think that is part of the reason most early after market auto body parts were such poor fit. Ever throw an after market fiberglass hood on a car? D.F.F.S. Molds made from existing finished parts might work but the tube it fits to will need adjust ability for good fit or mold will need to be sized to compensate for shrink I think.
Sully
77 royale
------Original Message------
From: Russell Mehlenbacher
Sender: gmclist-bounces@temp.gmcnet.org
To: gmclist@temp.gmcnet.org
ReplyTo: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Why not just build new ones?
Sent: Dec 25, 2011 8:19 PM
Shortly after we bought our "74, we took a ride out to Cinnabar in
Sandusky. They have, on the shelf, a front end mold. They have used it, but
the comment from the shop staff was that it took an incredible amount of
labor to fit to a coach. Maybe they didn't know how to fill the mold,
but I got the impression they weren't doing it again.
Russ
Russ & Linda Mehlenbacher
Rochester Hills, MI
'74 X-Sequoia
'76 Eleganza
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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