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Zef, Bert, ok sorry, I didn't really explain the question properly. I have done a bit of fibreglassing and have made moulds for small parts, but as Zef says, for anything of a decent size a timber frame is usually needed to keep the shape. Bert, that thing with a subframe could easily be done and I've done similar myself, but can't be used for a large flat shape like a bonnet because its too flexible to hold it to the right shape without a support frame. No, what I'm looking for is a more modern approach for one-off large moulds... eg, I heard of one chap who covered a boot lid in a thin layer of latex, then squirted cavity wall foam all over it to a good thickness to hold the shape. I only saw the result, which was a boot lid with every detail of the lock and trim etc., reproduced exactly in fibreglass. What I don't know is what sort of release agent he used on the original panel and then before the fibreglass was laid in. Any thoughts?
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