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Ronny
Ronny
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Since its on the underside it will take alot of beating, thats why i was wondering about using EF80
If you look at this picture


The side is in fact rubber on the original item, so it will bend upwards if you hit the road with it.

Now i have tried all evening to figure out one tiny leak.
I had several leaks which i all found by putting my ear into the mould and listen.
But there is at least one more leak which i am unable to find, any suggestions?

This is the setup


Gauge stops here: (closing the pump causes the vacuum to drop)



I actually found one leak that was through the whole mould ?!?


How do i prevent this in the future? more careful when applying the tooling resin?
carbonfibreworks
carbonfibreworks
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Hi Ronny
Sand the back of the mould to remove any raised sharp areas that would puncture the bag and cover the back of the mould with breather fabric then envelope bag the mould, you will use more bagging material but it will save a lot of time searching for leaks.
Chris
Carbon fibre works LTD 
Composite training and manufacture

http://www.talkcomposites.com/Uploads/Images/97e08777-693c-4af1-a27a-86cf.png
Edited 10 Years Ago by carbonfibreworks
Ronny
Ronny
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Thanks, i did as you suggested, and now i was able to get proper vacuum.
Ronny
Ronny
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Infused it now, and i mixed up resin according to the calculator.
That was precisely enough for the part... which meant that when i was about to close the feedline i moved the hose and lots of air was sucked in... :+\
I closed the feed line and kept the vacuum pump running for a while to get rid of most of the air bubbles before i closed the other end aswell.

Ill post a picture tomorrow of the cured part.
Ronny
Ronny
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I realise i did several errors with this mold.
One of them was not waxing it properly with the release wax.
Took some time to get the part out



Also the carbon had not bedded properly to the mould, so the glue was on the outside of the carbon/twaron



Im in the process of masking over most of the errors now.
This is a piece that sits under the car, so even if its not that good looking ill mount it and see how it wears and tears.

MarkMK
MarkMK
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For a first go that's not bad at all. With any new mould you probably have to allow for the first couple of pieces to be less than perfect, as you iron out the particular requirements of the lay-up

I'd certainly recommend using the Easylease release agent and being very generous with the number of applications on a new mould.
GO

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