Worm holes appearing in my gelcoat


Author
Message
Caden
Caden
Junior Member (23 reputation)Junior Member (23 reputation)Junior Member (23 reputation)Junior Member (23 reputation)Junior Member (23 reputation)Junior Member (23 reputation)Junior Member (23 reputation)Junior Member (23 reputation)Junior Member (23 reputation)
Group: Forum Members
Posts: 3, Visits: 18
Hey guys, this is my first post. I have been making a set of moulds to make a carbon fibre wing skin. I started with cutting my pattern out of high density blue foam. I then coated it with a couple layers of coating epoxy with a few scoops of microbeads thrown in to make it thicker and sandable. After sanding it down to a nice smooth finish, I cleaned the surface with the Easy-Lease mold cleaner. I then applying several coats of Easy-Lease release agent (letting it dry for about 15 mins between coats). I then went ahead and applied the gelcoat for the uni-mould process. I put a second coat on after letting the first dry for a few hours. I then let it cure over night. The next morning these wrinkles appeared in the gelcoat right in the middle of the surface. I figured they were only on the exterior. I then proceeded with the coupling coat followed by the reinforcement. The next day when I pried the pattern out there were these worm holes where the wrinkles had been in the gelcoat. They appear to be air pockets but when I put the gelcoat down (both times) the was a generous even coat. I've been following the recomended ratios for the catalyst so I'm right stumped to figure out what I did wrong. I tried a second go using the same process but with waitng a little longer between the steps but I got the same wrinkles in the gelcoat again. Can you help me?
Tags
Reply
brasco
brasco
Supreme Being (966 reputation)Supreme Being (966 reputation)Supreme Being (966 reputation)Supreme Being (966 reputation)Supreme Being (966 reputation)Supreme Being (966 reputation)Supreme Being (966 reputation)Supreme Being (966 reputation)Supreme Being (966 reputation)
Group: Forum Members
Posts: 192, Visits: 305
i am unsure if this is related but am tossing it out on the table so to speak. i had some polyurethane paint
for the engine bay of our F16 jets, and it was sprayed on cold sheetmetal and wrinkled immidiately. it did cure
and i wet sanded it smooth and fixed it. paint and epoxy obviously are not the same, but when things are made for
a certain temperature range and you get on that borderline--weird things happen,
 my thought is , perhaps cool work conditions and cold materials could be part of the problem?


CarbonFiberCreations



GO

Merge Selected

Merge into selected topic...



Merge into merge target...



Merge into a specific topic ID...




Threaded View
Threaded View
Caden - 12 Years Ago
Matt (Staff) - 12 Years Ago
carboncactus - 11 Years Ago
Caden - 12 Years Ago
Caden - 12 Years Ago
fgayford - 11 Years Ago
Carbon Tuner - 12 Years Ago
Matt (Staff) - 12 Years Ago
Warren - 12 Years Ago
brasco - 11 Years Ago
Warren (Staff) - 11 Years Ago
andygtt - 11 Years Ago

Similar Topics

Reading This Topic

Explore
Messages
Mentions
Search