Talk Composites - The Forum for Advanced Composites
Back
Login
Register
Login
Register
Home
»
Easy Composites Ltd Technical Support
»
Easy Composites Ltd - General Technical Support
»
Hazy GC50
Hazy GC50
Post Reply
Like
3
Hazy GC50
View
Flat Ascending
Flat Descending
Threaded
Options
Subscribe to topic
Print This Topic
Goto Topics Forum
Author
Message
wochi
wochi
posted 10 Years Ago
ANSWER
HOT
Topic Details
Group: Forum Members
Posts: 31,
Visits: 188
Hi all,
i finished my first part today using GC50 gel coat. Poblem is that the part got hazy and on an yellowish side.
What could be the problem? I sprayed the mould with gel coat spraying gun, let it cure for about 4 hours (25º over here) and then epoxy infused. Into the oven, cured at 50º for 8h.
The primarly objective was to fill the pinholes that i allways get no matter how perfect is the insfusion, and that resulted very well! But when i look at the part compared with other with no gel coat is very noticable the difference. The yellow tone i can understand as beeing a polyester gel coat. But the haze is a big problem.
Any ideas for the cause of this?
Thank you!
Reply
Like
3
GO
Merge Selected
Merge into selected topic...
Merge into merge target...
Merge into a specific topic ID...
Open Merge
Threaded View
Threaded View
Hazy GC50
wochi
-
10 Years Ago
How thick was the gelcoat? Also was it humid when you sprayed or let it cure? Both excessive...
Warren (Staff)
-
10 Years Ago
Hi Warren, thanks for your reply. I really don´t know how thick it was. First time using it. But...
wochi
-
10 Years Ago
Did another part today, with half the gelcoat. It was so thin it opened some "holes in the mould"...
wochi
-
10 Years Ago
I'm confident it will be moisture related. You can't necessarily rule out moisture being a problem...
Hanaldo
-
10 Years Ago
First of all thank you for your help! Moisture it´s very unlikely to be the problem. It´s plain...
wochi
-
10 Years Ago
Well, the new order arrived today. And there is a big difference in color inside the container. The...
wochi
-
10 Years Ago
Very strange. Perhaps it had started to dry out? We sell a large amount of GC50 each month so the...
Warren (Staff)
-
10 Years Ago
upside down but you get the point. Can this be the problem? GC50 beeing too old? How can i see the...
wochi
-
10 Years Ago
did another part with the new GC50 and the problem is still there! It´s perfectly noticable from...
wochi
-
10 Years Ago
Personally I think solve the problem as to why you are getting pinholes, coatings are just a bandaid...
Hanaldo
-
10 Years Ago
Thicker gelcoats will reduce in clarity for sure. Also it looks like the orangy GC50 is pretty old,...
Warren (Staff)
-
10 Years Ago
I tryed both ways. Making a very thick coat and a very thin coat. I have measured the thickness and...
wochi
-
10 Years Ago
Well there's an issue somewhere along the line, as it's certainly possible (and very easy in fact,...
Hanaldo
-
10 Years Ago
Never tried that as like you said it´s not supposed to work like that. But can give it a shot. At...
wochi
-
10 Years Ago
Gelcoat doesn't ACTUALLY fix the pinholes though, they are still there underneath the gelcoat. And...
Hanaldo
-
10 Years Ago
the pinholes are barely visible at naked eye so i think they wont be a problem in the future. I´m...
wochi
-
10 Years Ago
Could this be gas in the GC50? Superfine bubbles might not be visible as bubbles but would make a...
FLD
-
10 Years Ago
To be perfectly honest, I think you have an issue with either your resin (too high viscosity) or...
Dravis
-
10 Years Ago
I appreciatte your help with the infusion but the point here is to try to understand what is wrong...
wochi
-
10 Years Ago
It does sound like you are applying it too thick or there is something else going on you haven't...
Warren (Staff)
-
10 Years Ago
Thanks Warren. I´ve been using the wax since the first test and it does help. Regarding the...
wochi
-
10 Years Ago
It depends on your compressor but you are wanting to be between 60-100PSI using the standard nozzle...
Warren (Staff)
-
10 Years Ago
so quantity is not the problem as i´m mixing 150gr for a 1/2 square meter mould... my compressor...
wochi
-
10 Years Ago
The "flow control" knob literally controls the flow by adjusting the pressure so there is...
Warren (Staff)
-
10 Years Ago
do you have any other video were it is beeing used and sprayed other than the bonnet series?
wochi
-
10 Years Ago
We don't have any other videos showing the cup gun in use and to be honest, I'm not sure what...
Warren (Staff)
-
10 Years Ago
Post Reply
Like
3
Similar Topics
Post Quoted Reply
Reading This Topic
Login
Login
Remember Me
Reset Password
Resend Validation Email
Login
Facebook
Google
Explore
Messages
Mentions
Search