Looking for help and info pls


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MarkMK
MarkMK
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Coxo (12/01/2017)
What do u mean by cutting into smaller  pieces 

Would that be on the second layer  and so on ? 


I meant possibly trying to cut each of the inner 'up and down' sections of the piece as separate pieces that overlap each other slightly and then doing the outer flange section also as a separate piece with some small cuts so that you could overlap it onto the pieces already laid. Done neatly, the joins could be almost seamless and this would allow you to get the weave of each section nice and straight and in a uniform direction. It would also help with getting the surface layer tight into the mould without the risk of bridging.

I'd also look to do something similar with the heavier backing layer, but you could afford to be a bit less exact with that as you'd only be trying to get it to lay down fairly tight onto the surface layer

It'd be fiddly on a relatively small mould such as that, but misting the fabric with spray-tack or, perhaps, using something like EC's Profinish will help keep your cut lines sharp

Done as a single surface layer it looks nigh-on impossible to achieve a neat looking finish
Coxo
Coxo
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Yeh fasta full envelope bag tape on each end 
Fasta
Fasta
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If I were laying this part up in any process I would cut small clean rectangles to cover the vent sections only and then cut two larger longer lengths and lay this on each long side overlapping the whole centre vent sections. Clean joins are not very noticeable and usually much less noticeable than distorted weave.

I can't see how you can get a leak on such a simple bag. Full envelope bag? Tape each end.  




Coxo
Coxo
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The problem I am getting really is full vacuum 
I can here a leak but no matter what I can't seem to fix the leak 
Coxo
Coxo
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Hopefully I can get it   Thanks 
scottracing
scottracing
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You will be better cutting strips with a 45degree orientation and laying them into the rads then putting an allover ply on.
Coxo
Coxo
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Nearly got it  talk a. About a had part to do 
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scottracing
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You need to cut the pieces smaller so that they sit into the tight rads. When you do wet lay like this you really need to force the fabric into the corners as it will bridge very easily with a 2x2 weave.
Are you placing the whole mould in a vac bag? If you are as people have mentioned dont pull full vac initially. You need to make a bagging dibber esentislly a spatula to force the material and bagbinto the corners. Also ensure the vac bag has excess in the corners as it will bridge and pull the carbon up.
Coxo
Coxo
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I have tryed here as per above post waiting till tack 
I'll see how that gose or infusion as u say fasta 
But I am not sure how to do that  
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Coxo
Coxo
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What do u mean by cutting into smaller  peices 
Would that be on the second layer  and so on ? 
GO

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