Still having voids after several attempts


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syahnoo84
syahnoo84
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Hi,

This is my result of several attempt of resin infusion. For the first time, i'm having quite a lot of voids on the surface. On second and third try, i have slowed down the resin, and clamp the vac line first then after a minute later i clamp the resin feed line, but still having the problem. 

The part that i'm working on is approx. 1M x 1M. Its a car fender. 

I'm using infusion epoxy resin from Axson (epolam 5015). The mold also made from Axson tooling gelcoat. In my country, temperature is not an issue even at night.

i'm able to pull full vac and there are no leak after i left it for 1 hour. the carbon i use is 650gsm from EC. Total time to infuse is less than 15 min.

You guys have any idea?

http://www.talkcomposites.com/Uploads/Images/7d4485ad-1b71-4952-a890-5f2d.jpg


http://www.talkcomposites.com/Uploads/Images/f3fcd317-2b1f-4cb2-86c8-b624.jpg
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fgayford
fgayford
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Hello
I would make 3 suggestions.
1 make sure your mold is very warm
2 make sure your resin is very warm
3 Do not let the infusion front go at full speed or it may skip over parts as I see in your picture.
open the feed line only enough to get the resin front moving at a slower feed which will allow the wetting process more time to fill every void.
Hope this helps.
Fred   
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