Talk Composites - The Forum for Advanced Composites
Back
Login
Register
Login
Register
Home
»
Advanced Composites Forum
»
General Composites Discussion
»
Organic form sofa in CF
Organic form sofa in CF
Post Reply
Like
2
Organic form sofa in CF
View
Flat Ascending
Flat Descending
Threaded
Options
Subscribe to topic
Print This Topic
Goto Topics Forum
Author
Message
jawaswag
j
jawaswag
posted 7 Years Ago
ANSWER
HOT
Topic Details
j
Group: Forum Members
Posts: 2,
Visits: 14
Hi all!
I am intending to create an organic form sofa in CF. It's somewhat similar to the picture I've included below but a much smaller 2-seater version. My limitations are that I do not have space for a curing oven. Here are my concerns:
1) If I cannot cure an item in an oven, it means I will have to use room temperature cure resins and the means a hand layup method?
2) What can I make the mould out of? Is it a frame of wood with PU foam block for the the shape? If I do, how do I vacuum bag such a large mould?
3) Since the mould is likely to be a 'pool'-shaped form, can place a sheet over it and fill it up with water as a replacement over vacuum bagging? Would the high specific heat capacity of water affect the curing of the resin as it pulls heat away?
.
Cheers and thanks in advance,
Kai
Reply
Like
2
GO
Merge Selected
Merge into selected topic...
Merge into merge target...
Merge into a specific topic ID...
Open Merge
Threaded View
Threaded View
Organic form sofa in CF
jawaswag
-
7 Years Ago
1. Yes, as far as I am aware. 2. As long as frame and PU foam block can withstand 14.7psi. A large bag :-) 3. Yes, as long as you can cover item with 406 inches of water (approx 10m) :-). 1 cubic.....
Steve Broad
-
7 Years Ago
Room temperature cure doesn't mean wet layup. You could infuse the part as well. Using water isn't a good idea, as the water adds huge loads onto your mould, wich will likely deform it. A full vacuum...
oekmont
-
7 Years Ago
I have always assumed that wet layup also covered standard vacuum bagging and infusion as well as basic layup without vacuum, as they both are wet processes :-) The water idea was always a non...
Steve Broad
-
7 Years Ago
Thank you for the advice. How do I vacuum bag such an item? In my head, the mould would be a similar size and shape of a bathtub. I’ve only seen people vacuum bag items that are more of a flat form...
jawaswag
-
7 Years Ago
This needed a large bag.
Steve Broad
-
7 Years Ago
You seem to have no experience at all in the composite techniques. So my most important advice is to try something much smaller and easier, and understand every step and than slowly build to such...
oekmont
-
7 Years Ago
No, infusion isn't a wet process, because you lay up the fibres dry. Hand lamination is the only wet process. In all it's countless variations. It is quite simple: you have got a mould in the...
oekmont
-
7 Years Ago
Fair enough on the infusion process. My thought was that the resin is very wet:-) If the mould is suspended under 10m of water the pressure around it would be approx 14.7psi, the same as a vacuum ba...
Steve Broad
-
7 Years Ago
Also one important point: as long as you are just covering the wet laminat with a plastic film and the fill the plastic film in the mold with water, you got an open system. The resin in the laminate....
oekmont
-
7 Years Ago
Yes, Steve, but the mould isn't suspended in a 10m pool. This would actually work like an autoclave without heat, if you bag the mould and evacuate the air. The mould is just filled with water. And.....
oekmont
-
7 Years Ago
Filling the mould with water certainly wouldn't work, which is why I said you need 10m of head :-) Pretty academic, anyway as it isn't gong to happen.
Steve Broad
-
7 Years Ago
Post Reply
Like
2
Similar Topics
Post Quoted Reply
Reading This Topic
Login
Login
Remember Me
Reset Password
Resend Validation Email
Login
Facebook
Google
Explore
Messages
Mentions
Search