CF hood ruined, help needed

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#1

Can you guys tell me what is causing these problems you see in these pictures?

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Hood was made in two stages. First 2 layers CF and then vacuum bagged. Then honeycombs and 2 layers CF and again vacuum bagged. Im using SP 115 epoxy resin. I had a minor leak in bag, but since I’m not using infusion that shouldn’t be a problem, should it?

Thanks for your help!

#2

i know some people are going to say spray some clear gel coat in your mold first…

#3

What is the working time for that Epoxy?

Try limiting the number and size of the pictures so they pop up without clicking links.

Welcome…

#4

Gel time - 150g mix in water 1 hour
pot life 500g mix in air 33 min
Latest vacuum flow time 2 hour 10min

Thanks

#5

from your 4th pic it looks like you;re not getting rid of the air pockets completly before bagging.
Another thing is what vac pressure are you going up to? and how much resin is coming to the bleeder layer. It could be removing too much. (a problem I ran into constantly when I was bagging only)

#6

If the mold is good i.e. the spots where there is no resin is not left in the mold then you`ve trapped air. It looks like you just about have all the necessary equipment to do an infusion so my advice would be to go that route and spray something like Duratec in the mould first. It is also of the utmost importance that you have no leaks and i do mean no leaks. Do this and your failure rate will be virtually zero.

Best of luck and let us know how it goes.

Baz

#7

Riki,

I can’t really help you with this, but I did want to welcome a fellow Finn to the forum! What vehicle is this for?

#8

seems us Finns aren’t too uncommon round here :wink:

#9

Thanks. The CF hood is for my Nissan 200sx project :slight_smile: I’m going to try and save the “ruined” hood with CF overlay since I really don’t want to do a painted version. For my next part I will try the vacuum infusion method as baznos suggested. Let’s see what happens :wink:

#10

Wow! Anbody else? :wink: (btw, check your pm)

#11

I’m sure that will work fine. It will involve more finishing work to get a smooth finish, but like you said, at least the hood won’t be scrapped. Those are sweet cars. I think my nephew in Finland has/had one as well.

#12

The overlay is finally done. It’s not perfect but it will do. It took quite alot of finishing work but I’m happy with it. Next time I will try and use the vacuum infusion method. :slight_smile:

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