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Old 26-05-2016, 08:37   #16
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Re: Wet Bag Vs Vacuum Bag Build For Catamaran

Catman,

Could be, like I said I have never heard the term before.

But the 'best' method from an engineering stand point is using prepegs. Where the epoxy is pre-applied in measured amounts to the cloth. The downside is that it is very expensive. You have to hold the wet cloth in a freezer to keep it from curing, then bake it in an oven to cure it.

Infusion has become a very reliable method of construction, but there are real risks. It is not unheard of for a hull infusion to go bad, and watch the entire stack plus resin get wasted because of poorly placed feed/vacume lines. There are now software programs that help lay this stuff out, but they are not perfect. But when it works it leads to a close to ideal product.
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Old 26-05-2016, 13:16   #17
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Re: Wet Bag Vs Vacuum Bag Build For Catamaran

Quote:
Originally Posted by Stumble View Post
Catman,

Could be, like I said I have never heard the term before.

But the 'best' method from an engineering stand point is using prepegs. Where the epoxy is pre-applied in measured amounts to the cloth. The downside is that it is very expensive. You have to hold the wet cloth in a freezer to keep it from curing, then bake it in an oven to cure it.

Infusion has become a very reliable method of construction, but there are real risks. It is not unheard of for a hull infusion to go bad, and watch the entire stack plus resin get wasted because of poorly placed feed/vacume lines. There are now software programs that help lay this stuff out, but they are not perfect. But when it works it leads to a close to ideal product.
Resin infusion in a full mold where you are looking for a perfect part first time is a totally different kettle of fish than making panels on a table. KSS builders do not lose panels. It changes a sticky messy job into one which is clean and very satisfying - family and friends come to help. 95% of the laminating of the whole cat is done on the table.

Wet bagging is not a term I have encountered either. Vacuum after hand laminating is my guess.

Happy Boating

Derek
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