Using Vacuum for covering parts in CF.


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fibernoob
fibernoob
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Hi all.

I am having some trouble with the covering of a complex part.  (Automotive gear lever surround) 
The CF Fabric is not responding well to the contours and hole in the center.  Lifting with resin etc etc....

I have tried a quick method using vacuum bagging material and the pump ...  It seems to be ok so far..but  haven't seen much info on doing things this way. 

Just curious to know if anyone else has tried this.

Im still testing the best way to adapt the fabric to the part ...but it seems like a possible shortcut to covering complex parts  

  • Cover the part in CF Fabric 
  • Cover part with Resin
  • Cover wet part with peel ply 
  • Set in bag and apply vacuum.
  • After part has dried ... sand the marks from the peelply using thin sandpaper....
  • Apply normal layers of resin as finishing coats.

Edited 7 Years Ago by fibernoob
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Hanaldo
Hanaldo
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The part is going to come out EXACTLY the same as the surface it is in contact with. If you're putting a perforated release film on it, it's going to come out with the perforations, and likely not much gloss as those films don't tend to be glossy. As well as any creases you are getting from the bag, which tends to be inevitable given that is how you get the vacuum bag to conform to inside radii.

You could try to use a non-perforated release film like FEP or mylar release film, which will give you a good finish provided you can get any and all creases and voids out. In all honesty though, I have never had excellent results trying to get a good finish like that. There's nothing wrong with using vacuum to hold the carbon in place on complex parts, but it's less frustrating to just accept that you are still going to have to do some finishing work on the part. As long as you don't pinch the carbon in the bag, then it shouldn't take much just to sand it flat and then clear coat the parts.
Edited 7 Years Ago by Hanaldo
MaksE55
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So for me the surface texture is not the problem. The problem is there is a thin coat of the film being stuck on the surface of the part. That’s the problem.
I wanted to use the vacuum back to gold down the carbon with each layer to prevent those pesky low spots that drive me inasane. Looks like that’s not possible and the release film doesn’t really work like that. Oh well
GO

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fibernoob - 7 Years Ago
scottracing - 7 Years Ago
fibernoob - 7 Years Ago
Interloper393 - 7 Years Ago
fibernoob - 7 Years Ago
Hanaldo - 7 Years Ago
fibernoob - 7 Years Ago
MarkMK - 7 Years Ago
fibernoob - 7 Years Ago
fibernoob - 7 Years Ago
Hanaldo - 7 Years Ago
fibernoob - 7 Years Ago
Interloper393 - 7 Years Ago
fibernoob - 7 Years Ago
Interloper393 - 7 Years Ago
             Nice parts! Well done.
fibernoob - 7 Years Ago
Interloper393 - 7 Years Ago
MaksE55 - 7 Years Ago
fibernoob - 7 Years Ago
MaksE55 - 7 Years Ago
Hanaldo - 7 Years Ago
MaksE55 - 7 Years Ago

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