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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Joe
Joe
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Honestly, I have no clue how much more resin you should mix. I really think it depends on your consumables: how long is your feed line, how long is your spiral etc.

What I personally do in a new part is weighting a little more resin that what the fabric takes. Say I mix 300 grs when I have 270 grs cloth. Then I look at the resin feed liner and if I notice I wont have enough, I clamp the resin feed, get a new liner, and mix a bit more resin (be carefull if you use fast catalyst not to take too much your time doing this). Then I pour it in the first liner when my feed line is. The second liner / pour method is used to mix the second batch of resin to avoid entrapping air in the feed line.

So next time you know how much resin weight you need. I keep track of everything in my computer so I know what I need exactly for this or that part (resin weight, feed line lengths, spiral length etc etc).  

I use double layer of distribution mesh under my vacuum line connector, but I'm not saying its the best way. Thats just how I do.

Dont forget the pics when you're done Wink

 



 


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