I have built this twice and both times my materials have bridged in the same spots. I can’t figure out how to be 100% sure it’s down. This piece has so many transitions I get one spot good and another bridges. Give me your thoughts.
Picture of the part
Hi
Quite a few potential areas but the pleats in your bagging material look very short suggesting to need to use a larger piece of bagging material.
Regards Chris
Carbon fibre works LTD
The bag film looks like Stretchlon 200 so more pleats should not be needed.
Either you need to make the part with more than 1 piece of carbon or pull a partial vacuum and then work the fabric into the corners.
From my experience any stretch type bagging material is bad news when used for infusion, just my own thoughts.
Chris
Carbon fibre works LTD
I agree. For infusion stretchlon usually is not the best.
The first time it was my infusion netting that caused it. This time I split the netting so that it could move. I think this time was caused by my peal ply. With all the areas how would you ensure each one was getting the pressure as needed? I tried adjusting everything as I put it together and added weights to try and hold it place while I adjusted other areas but it still must not have had enough material…
why stretch type bag is not ideal ?
It conforms to the resin transfer media tightly enough to choke resin flow.
It can get rather fiddly. It may help to approach the material placement as if you were not vacuum bagging at all. If it conforms well enough to do it without the bag it will be great with the bag.
Looks more like an air inclusion than a bridge to me. The top void is on an outside radius of the mold. Bridging is seen on inside radii (at least that’s the terminology I learned many years ago). You may have some race tracking around the void areas. Maybe you need to look at the flow path.