Talk Composites - The Forum for Advanced Composites

Now using clear gelcoat, finding new problems, advice??

http://www.talkcomposites.com/Topic12487.aspx

By brettalloy - 8/6/2014 6:57:29 PM

Hello.


So got set up to spray and ordered in easycomposite clear gelcoat. No problems spraying this and getting a good even coat down.
However my problems are coming with the infusion.

So previously i had infused with epoxy, took a while but i got the process id say about 99%, very few pinholes in laminate. Most parts were bodywork and these were came up great after clearcoating.

Please see attached pics, Im getting air pockets and some in really random spots.
I dont know how i can get a relatively perfect looking part and then an air spot.
Some instances where i have sharper geometry/edges i can understand a little bridge maybe, looking at the reverse side of the part its flawless. Surely the resin will pool in and fill even if the fabric is slightly back??
By 20_rc51_00 - 9/6/2014 5:29:19 AM

how many layers of reinfircement do you have? perhaps your resin front upon infusion is travelling too fast across the part and not fully able to saturate the whole thickness of the reinforcement by the time it has passed by trapping a bubble.... although I would suspect much more entrapment if this was the problem...