Talk Composites - The Forum for Advanced Composites

Using Vacuum for covering parts in CF.

http://www.talkcomposites.com/Topic24973.aspx

By fibernoob - 1/16/2018 6:46:38 PM

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.
By MaksE55 - 3/4/2018 2:44:49 PM

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