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

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

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

Author	Message
brettalloy	brettalloy posted 11 Years Ago HOT Topic Details
Group: Forum Members Posts: 23, Visits: 69	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?? Attachments Void 1.JPG (607 views, 105.00 KB) Void 2.JPG (646 views, 108.00 KB)
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brettalloy	brettalloy posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 23, Visits: 69	So full vaccuum might be restricting resin flow? Didnt have such a problem without the gelcoat. Does this mean as the fibre is being pulled tight under full vac that it struggles to get between the gelcoat and the first layer. If my vaccuum is set on full how do i reduce it slightly to help the infusion? Im running the standard easycomp pump and catch pot. The idea being less vac more slack for resin to penetrate, then when you have it infused you crank the vac back up to full to get best consolidation?
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brettalloy	brettalloy posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 23, Visits: 69	Sorry when you mean vaccuum close off do you mean after the part has infused close the vac outlet offbut contiue to pump more resin in through feed. One thing i will say is that as soon as everything has wetted out i am stopping the resin feed, eg not pumping more in. Do i need extra resin fed in to ensure the that i get all the spots in. The problem i see is spot areas in amongst a decent full infusion, rather than a lack of resin
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