Pinhole uneven surface

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Pinhole uneven surface

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primoz1111	primoz1111 posted 10 Years Ago HOT Topic Details
Group: Forum Members Posts: 3, Visits: 31	Hello! First hi to everyone using this forum, you got nice community here. Ok the PROBLEM I am using 245 2x2 twill 43% resin rich prepreg. As you can see the resin in not equally spread through surface. My product demands 2 layers of prepreg so when i stack the layers i turn the the sides with more resin facing each other then i combine them so the most resin is in the middle of fibres letting the vacuum do its job. When i vacuume the prepreg i use release film perforated and breather all stuck in vacuumbag. My tactic is 3h of vacuuming on room temp then 1-2h on 45C, 1h on 60C and 1h on 70C after that i cure it at 120C for another hour more This is my BEST result : So here is the problem why is here areas of pinhole free surface and with pinholes is it the resin not evenly spread the or the problem is my tactic of vacuuming any tips or help will be nice. P.S. I am using http://shop1.r-g.de/item/390102S vacuum pump Tags pinhole pinhole free prepreg Edited 10 Years Ago by primoz1111
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Jacopo Carbonio	Jacopo Carbonio posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 43, Visits: 109	I never used pre-preg but looking a lot of video, as Matt said right, they use only unperforeted film and breather to spread the vacuum on the surface but if you use perforated film with this percentage of resin it goes away and you have your result
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Pinhole uneven surface

primoz1111 - 10 Years Ago

I'm getting the same surface finish when I vac bag my wet layup. The effect (on both our items)...

amgrace - 10 Years Ago

I have no problem with sealing. My vacuum stays if i stop the pump but i use pump all the time...

primoz1111 - 10 Years Ago

Hi guys, Can you give the technical data sheet of your prepreg ? 2 reasons that may resolve your...

Julien - 10 Years Ago

You need to get a proper Out of Autoclave pre-preg to be honest. This part is only 2 layers thick...

morepower - 10 Years Ago

You say you are using a perforated release film?! must be an unperforated one! ratio fabric/resin is...

matthieutje65 - 10 Years Ago

I never used pre-preg but looking a lot of video, as Matt said right, they use only unperforeted...

Jacopo Carbonio - 10 Years Ago

[quote][b]primoz1111 (17/04/2015)[/b][hr] Hello! First hi to everyone using this forum, you got...

fgayford - 10 Years Ago

Hello! Tnx for all replays. It was help full ALLOT!!! i did it no pinholes at all i cant be...

primoz1111 - 10 Years Ago

[quote][b]primoz1111 (22/04/2015)[/b][hr] Hello! Tnx for all replays. It was help full...

creator - 10 Years Ago

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