I work for an ornamental plastering contractor and such molds are well within our grasp. Well-supported, the mold would not need to be as thick as 5 times the thickness of the desired cast. I have thought of making just such a mold but I don't think it works economically for me. Plus I hate glass and resin work. It's worse than Formica work. It would ideally be cast in epoxy, specifically a vacuum-bagged, SCRIMP (vacuum-formed, glass-impregnated epoxy) technique. This would be a very expensive proposition. It could be done as plain, old polyester resin but if I were to take the trouble to build a mold that size, I would go full epoxy. the interior finish doesn't have to be an interior mold. One could simply make a liner mold that allowed for some insulating space between outer shell and inner shell. The two parts would be bonded together at the bottom edge seam and various points along its section. It could be really cool but like you said, John, a lot of work. The resin would also be pretty expensive. Best to leave it to a proper plastic and glass shop, I think. -- mordo 1990 Carat |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.