Hi guys, I'm doing some infusion tests with carbon twill 3k at low cost and I have problems
because the result is always the same getting dry finish on the surface.

I tried some methods like closing the vacuum line and then making the piece rich in resin, but nothing, it's always the same ..

Resin pot line: 6mm full open, fast.
Test 1: 30 seconds
Test 2: 1 minute
Test 3: 1 minute 30 seconds
Test 4: 2 minutes
Test 5: 4 minutes
Test 6: 8 minutes

Always the same, dry spots.


Testing on glass, plain..
Infusion area: 25x30cm - Carbon area: 15cm x 20cm

Im using the entire vacuum infusion kit from easycomposites, but not:
-Carbon Fiber
-Vacuum bag.
-Peel ply
-Epoxy Resin A+B = 400cps.

Any comments will be appreciated, thank you.

Bubbles in the sight gauge are normal.  They tend to calm down a bit once full vacuum is achieved and there is no air exchange.  Also make sure you haven't over filled it with oil as that can make the bubbles appear worse.

Running for long periods of time, the casing  could well get up to 50C or slightly more so generally this is nothing to worry about. 

The main thing is ensure your leak tests are successful as that way you know the pump will be running against a  properly sealed bag.


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant