Talk Composites - The Forum for Advanced Composites

who has made bladder mold.

http://www.talkcomposites.com/Topic19696.aspx

By carolina - 10/30/2015 1:30:29 PM

WHO HAS BEEN SUCCESSFUL WITH 2 PART BLADDER MOLDS?

I made a 2 part bladder mold/tool to make sq carbon tubes. inch 1/2 X inch 1/2. Have made a sample 14" long, fg twill and some old epoxy. Turned out great but my tool is 5 and 1/2 feet long. Its a easy cf layup but l need to perfect my bladder/I used a bicycle inner tube & it did not stick but this was short piece.



Made mold of carbon: This may work,http://www.aircraftspruce.com/catalog/cmpages/stretchlonvacuumbag.php



Some one said try 2mm thick vaccum bag for your bladder. But would haf to joint it together somehow and make a tube that would blow up slightly with air.
By carolina - 11/1/2015 10:16:42 PM

thanks , l can prob figure out how to cap off one end easy and make a other cap w/hole or something for air & vaccum. Will vaccum pull latex bladder off inside of mold after cure?

Making own latex lil' later, now l like that idea if my nerves hold out.

Well, if this nice lady sends these freebees ill mess around with them a few days.

Did you every use bicycle inner tubes? I made that short sample with no end caps.  Not recommended? To thick? Will no do corners?