Talk Composites - The Forum for Advanced Composites

sealing a closed mould?

http://www.talkcomposites.com/Topic20258.aspx

By Fasta - 1/16/2016 3:15:47 PM

I am about to bladder mould a part within closed moulds and was thinking that this may try push a bunch of resin out through the clamped flanges and just be messy?? Hopefully not?

The flanges are just flat and have some location bumps.

Does anyone have a clever temp trick for sealing my flanges?

It's a wet layup epoxy job.

Maybe just a bead of epoxy glue in within the flange would be thick enough to stop any flow? Or maybe an automotive gasket goo?
By Fasta - 1/17/2016 4:37:59 AM

Ok I'll get some and do a small test on the flange before I commit. I have some red RTV stuff on hand. Same thing?

What ever I use it needs to be slow enough setting so I can get around the 2.5m of flange and close the moulds but then set enough or just be stiff enough to block the flow of resin once the pressure comes.