Envelope vacuum bagging question


Envelope vacuum bagging question
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Massimiliano
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Massimiliano
posted 5 Years Ago HOT
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Hi, for the mold I have it would be easier to use an envelope bag instead of a bag attached to the flange.
But how do you prevent resin running over the flange and filling the back breather cloth?
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Envelope vacuum bagging question
mporta71 - 5 Years Ago
     You can't. One of the drawbacks of envelope bagging.
Hanaldo - 5 Years Ago
             So you apply release film on the back to avoid the breather become solid with the mold?
mporta71 - 5 Years Ago
     If you intend to use the mould more than once then yes, this is generally best. Or skip the breather and just do several layers of peel ply. It is messy and can make using the mould a royal pain in.....
Hanaldo - 5 Years Ago
             Thank you!
mporta71 - 5 Years Ago
     On moulds where I have needed to envelope bag regularly, I sanded the back of the mould smooth, then brushed on a thin layer of resin. Once cured I would Easy Lease coat it. That way any resin on the...
Warren (Staff) - 5 Years Ago
             Brilliant, thank you!
mporta71 - 5 Years Ago

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