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I Need Some Help - Newbie Alert - Pics - FAIL!

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MovingOn	MovingOn posted 10 Years Ago Topic Details
Group: Forum Members Posts: 3, Visits: 41	Hello all~! As you are about to see - I am very new to making carbon fiber parts. I have a sailboat that I need to make some fairly large pieces for and right now just can't get out of the gate! One issue after the other and I'm sure it is all on me. I've vacuumed bagged multiple pieces and they all come out the same, shitty. The carbon fiber doesn't form to the mold very well and carbon itself is very dry - like the resign was sucked out of it. What I did in this latest fiasco was: Mold release Mixed the epoxy and put a thin layer - let it sit for 20 minutes (using 207 hardener) Laid the first 200g carbon fiber cloth on - put a lot of epoxy. Laid the second - put a lot of epoxy on - and then laid the third and final - with more epoxy. Placed a piece of peal ply. Placed a breather cloth. Put on the vacuum bagging and attached. Before the real crappy end result I have a few questions: Could my vacuum pump be pulling too hard? It isn't huge but maybe a little too big for this job. It is a 5 CFM 2 stage 1/3 hp Robinair. Tons of resign ends up in the breather cloth... The Carbon Fiber feels very dry and has a mate finish. Is there a specific number I should pull instead of letting it drop all the way to 30? The carbon fiber doesn't get down in the corners very well - comes out of the mold rounded with just resign in the corners. Could the breather cloth be too thick? Or am asking my setup to do something it just can't. Thanks all for your comments / suggestions / jokes. Communities like this make the world a hell of a lot better as it gives people the confidence to go out and do somethingthey never thought they could! This was the first go - and the plexiglass we had under it was way too thin and bowed. We have a gauge and regulator on the new setup that we used for the above hosed pieces.
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Matthieu Libeert	Matthieu Libeert posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 955, Visits: 3.4K	I think I've found your problem reading your description in your way of working... You've forgot the perforated film... if you are not using it the breather will suck out "all" of the resin. The perforated film will ensure there is still enough resin in your part and only the excess resin is sucked out by the breather. Give it a try and let us know how it went Matthieu Libeert Founder MAT2 Composites X Sports website: www.mat2composites.com
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I Need Some Help - Newbie Alert - Pics - FAIL!

MovingOn - 10 Years Ago

Hi, don't feel too bad, I reckon thats a pretty good go for a first time! Forgot the plexiglass,...

ChrisR - 10 Years Ago

I think I've found your problem reading your description in your way of working... You've forgot the...

matthieutje65 - 10 Years Ago

Thanks for the replies and support! Chris - working on the items you outlined. Going to lay it up...

MovingOn - 10 Years Ago

The peel ply is different from the film he is talking about. You use the peel ply first which will...

dbcrx - 10 Years Ago

Doh, its so long since I've done wetlay like this I'd forgotten about this layer!! With vac bag...

ChrisR - 10 Years Ago

Use less resin, on second and third plyes, as you just don't need it. Just wetting them is enough....

Zorongo - 10 Years Ago

Like you I'm fairly new to this but am a little few down the road having done some similar small wet...

VVS - 10 Years Ago

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