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Not releasing - probably got it wrong. Help please.
Not releasing - probably got it wrong. Help please.
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Not releasing - probably got it wrong. Help please.
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JDUB
JDUB
posted 7 Years Ago
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Small teardrop shaped plug made of glass and West epoxy. Lots of polyester filler and car spray filler primer to get a good shape and surface. We put on quite a bit of Easy-lease as per instructions, then wax as well. All polished up. Mould made using polyester and glass starting with gel coat and surface tissue. Did not release at all. Took all the paint and filler off the plug Is this to be expected? What should we have done? Small private user. Can't afford complicated systems.
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7 Years Ago by
JDUB
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Hanaldo
Hanaldo
posted 7 Years Ago
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Wax doesn't form a barrier, you need to use PVA.
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JDUB
JDUB
posted 7 Years Ago
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Hanaldo - 4/10/2018 11:33:12 PM
Wax doesn't form a barrier, you need to use PVA.
Reluctant to use it as it does not seem to maintain a good finish. May have to if I can't afford the complicated systems.
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Not releasing - probably got it wrong. Help please.
JDUB
-
7 Years Ago
Did you use a single pack primer or a 2k? If it was single pack then it certainly wouldn't work at all. Even if it was 2k, one can often run into problems if you didn't leave it for a few weeks to...
Hanaldo
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7 Years Ago
Thanks. Single pack spray. Sounds like it will be difficult to make the things I plan with a reasonable timescale. I had hoped the wax would form enough of a layer to isolate. Seems not.
JDUB
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7 Years Ago
Wax doesn't form a barrier, you need to use PVA.
Hanaldo
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7 Years Ago
Reluctant to use it as it does not seem to maintain a good finish. May have to if I can't afford the complicated systems.
JDUB
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7 Years Ago
Yeh you haven't got much choice, there's no real short cuts. If you can't use surface coats that resist the solvents in the gelcoat and heat from the curing of the mould, then you need something that...
Hanaldo
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7 Years Ago
Release film sounds interesting. Searched but not found a product. PTFE perhaps?
JDUB
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7 Years Ago
Might be a bit of a misleading title in this context. Release film is intended to go on the reverse side of parts, to prevent vacuum bagging consumables from sticking to the part. A non-perforated...
Hanaldo
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7 Years Ago
All the semi perms be it from frekote,chemlease,marbocote whoever only work on a none pours surface Bet your sealer is being soaked through your paint into your filler If you have a rough pattern...
f1rob
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7 Years Ago
You can use materials like tygaflor which is a sticky backed ptfe release film. Ive used it several times on mdf moulds.
scottracing
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7 Years Ago
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