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Now using clear gelcoat, finding new problems, advice??
Now using clear gelcoat, finding new problems, advice??
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Now using clear gelcoat, finding new problems, advice??
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brettalloy
brettalloy
posted 11 Years Ago
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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??
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Now using clear gelcoat, finding new problems, advice??
brettalloy
-
11 Years Ago
More pics
brettalloy
-
11 Years Ago
I've had similar. Looks like pin-holes under the gelcoat. Usual cause is too mcuh vacuum / not...
FLD
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11 Years Ago
So full vaccuum might be restricting resin flow? Didnt have such a problem without the gelcoat. Does...
brettalloy
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11 Years Ago
Sorry when you mean vaccuum close off do you mean after the part has infused close the vac outlet...
brettalloy
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11 Years Ago
Sorry should have been clearer. Yes let more resin in after the vac line has been closed. I find...
FLD
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11 Years Ago
Thanks! So I will make sure i have abit more resin mixed, once full wet out achieved will close...
brettalloy
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11 Years Ago
Hi I always close off the vacuum side and wait 10 seconds before I close off the resin in line. I...
fgayford
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11 Years Ago
Just an update, as although I have improved things a fair bit im still having a small amount of...
brettalloy
-
11 Years Ago
Do you degas your resin fully before infusing?
FLD
-
11 Years Ago
Yes i do, not via a chamber but i mix and leave for 8-10 minutes before infusing
brettalloy
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11 Years Ago
Unclamp your feed line slowly, let the resin move up to the clamp, then clamp it again. Wait about a...
Hanaldo
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11 Years Ago
To Hanaldo. Thanks will try, the pockets that have came in can only be through trapped air/gas....
brettalloy
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11 Years Ago
how many layers of reinfircement do you have? perhaps your resin front upon infusion is travelling...
20_rc51_00
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11 Years Ago
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