Talk Composites - The Forum for Advanced Composites
Back
Login
Register
Login
Register
Home
»
Resin Casting and Moulding Forum
»
Clear Casting and Coating
»
How on earth do I do this?
How on earth do I do this?
Post Reply
Like
4
How on earth do I do this?
View
Flat Ascending
Flat Descending
Threaded
Options
Subscribe to topic
Print This Topic
Goto Topics Forum
Author
Message
Wends151
W
Wends151
posted 5 Years Ago
ANSWER
HOT
Topic Details
W
Group: Forum Members
Posts: 11,
Visits: 56
Hi everyone!
Slowly driving myself mad so after some advice if you don't mind?
Attached is an image of a thick block memorial paperweight I'm trying to make. No matter what I do, I can't seem to get it to an acceptable level of finish (this is one of MANY I have tried). The attached is where I was trying to be clever (subjective word I know!) and 'glue' the butterfly and acetate in place with a few drips of resin (to stop them moving from position), then unfortunately I let it fully cure (it should have just gelled but I forgot about it) before topping up to just under the brim and putting in a pressure pot to fully cure. I left it in the mould then topped it up with a thin final layer of resin, spritzing and torching away micro bubbles before covering and letting fully cure. Yeah, not a great result?!
Apart from trapped air behind the butterfly, you can see where the original resin has been used and/or inadvertently dripped?! Also, despite it only being a thin layer over a largeish surface area and being torched and spritzed with isopropyl alcohol, there are still gazillions of tiny bubbles?! In short, it is so amateurish it is not funny!
I'm using an epoxy Total Cast casting resin but am wondering if I should be looking at a different resin and/or technique completely? Any advice would be greatly appreciated.x
Reply
Like
4
GO
Merge Selected
Merge into selected topic...
Merge into merge target...
Merge into a specific topic ID...
Open Merge
Threaded View
Threaded View
How on earth do I do this?
Wends151
-
5 Years Ago
Not sure if its a good idea and have no direct experience with doing it to epoxy - but you might look into pressure casting to minimize the bubbles. I know it works for clear urethane and other...
explorecomposites
-
5 Years Ago
Thanks Chris but this is the result after it's been in the pot? Because you get the meniscus dip I've topped up that last couple of mm to the brim and I'm getting air bubbles from that. And this is.....
Wends151
-
5 Years Ago
Not knowing the resin system you are using, it is hard to tell if the resin is at fault or just a change in method needed to get best results. Certainly with our GlassCast range of resins, the...
Warren (Staff)
-
5 Years Ago
Thanks so much for your reply Warren. I'm using an epoxy TotalCast. Once it's in the pressure pot, do I not need to leave it in there until it cures? I am looking to get a vacuum chamber as I make m...
Wends151
-
5 Years Ago
Also, another question I wanted to ask was, is it possible to de-gas the resin separately? i.e. put the resin and the hardener in separate pots and de-gas them then mix together and do a final shorte...
Wends151
-
5 Years Ago
Depends on the resin system - the manufacturers data should give you the proper pot life etc. You can degas the parts of the resin separately but you will add air to the mix when mixing so it would....
Warren (Staff)
-
5 Years Ago
Post Reply
Like
4
Similar Topics
Post Quoted Reply
Reading This Topic
Login
Login
Remember Me
Reset Password
Resend Validation Email
Login
Facebook
Google
Explore
Messages
Mentions
Search