Some questions on my first resin infusion..!


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baja_patient
baja_patient
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Hi all, 

I have been working on a project for a fair while now, and I'm starting to see light at the end of the tunnel. As you can see in the attached pictures I started out with an unflanged mould in sight of using a wet lay-up technique. 

http://www.talkcomposites.com/Uploads/Images/3672aa2e-00f8-4b44-b041-6da0.JPG

http://www.talkcomposites.com/Uploads/Images/1d2de1f8-b396-43d9-a713-8d3b.jpg


Due to wanting cosmetically perfect parts and after consultation from the EC staff I decided to go for resin infusion instead. 

I modified my moulds so there would be sufficient flange space by adding a frame and a high-gloss surface to ensure that I can pull 100% vac. 

I am just about ready to start my first infusion and would like a few tips.

The first mould I want to do is 70x40cm and approx. 7cm deep at its deepest point. I am planning to use 2 layers 200g carbon cloth and 2 layers of approx 150g e-glass. 

Is this a good combination and how much IN2 resin will I need based on the information?

There is breather material included in my starter pack and it is also mentioned in the instructions, yet not in the video. I assume I should be using it. 

One more question (i hope): Can the reinforcement be cut smaller than the edge of the mould, or does it have to be almost at the gum tape? 

I hope I've formulated myself correctly!

Thanks alot.

Fabian
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SebRS
SebRS
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Hi Baja,

I'm not a composite expert at all, but i notice that you gum tape is not directly positioned on the vinyl gel coat.

Maybe your leak come from the wood/mould junction?

did you add something on this junction to ensure a perfect seal?

Regards, and good luck for your drop test! Wink

Seb.
baja_patient
baja_patient
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SebRS (04/05/2012)
Hi Baja,

I'm not a composite expert at all, but i notice that you gum tape is not directly positioned on the vinyl gel coat.

Maybe your leak come from the wood/mould junction?

did you add something on this junction to ensure a perfect seal?

Regards, and good luck for your drop test! Wink

Seb.


Thanks guys, 

Yes I know what you mean, but I extended those flanges on purpose, its plywood with a layer of glass fiber and then a gloss coat of epoxy. I really hope that its air tight, I assume it is though. The joint is epoxied and then the subsequent top layers. 

Thanks Joe, 

I hope that the mould is tight. I was also considering bagging the whole thing in a tube, I would need to sand and/or apply some sort of soft fabric around the wooden sides and the bottom, because the bottom is pretty rough due to the putty and fixing method of the flanges. 

It seems like a whole lot of extra work. So before I consider doing that and before I remove the the stack, I will give it another go with the bag on top as instructed on Monday, hopefully it was just a first time bagging error and I will get her to seal. 

cheers
GO

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