The lower viscosity resin allowed you to infuse more quickly… In fact it was too quick. Slow it down and you’ll get better results.
Thats fully wet out, I think you just have a to high VF. Than it can happen that the fabrics are compactrd that much that they do not have resin between them, the contct surfaces are dry because the resin can not flow between them.
With a higher viscosity the resin will go between the fabrics. Thats a well known problem. You need more resin in your laminate to get a little lower VF. The brake zone still allows too much resin to escape.
Sorry what is VF?
Fiber to volume content.
Ahh maybe that is my problem. I did not do any peelply only brake zone. I just stopped the flowmedia an inch away from the end of the part, the carbon an inch past the part straight into breather.
^ I’ve seen the same problems on a few of my parts. Not too often, but when they happen its a tragedy.
I’ve seen these problems both on parts I’ve cut the flow media a few inches past the end of the part, and on parts that I ran the flow media almost all the way towards the vacuum port. I’ll be getting a couple dozen yards of MTI hose to see if that changes anything.
Also if its worth mentioning. I’ve seen parts come out better than worse if I overinfuse the part. Meaning I would pull up on the bag near the hose to vacuum more resin into the part, and then spread the resin throughout the part. I usually do that a few times and then let the resin settle and disperse. Does anybody see a problem with that? Usually when I don’t do that I get dry spots on the surface of my parts. My laminates usually consist of 1 layer of 11oz carbon, one layer of 20oz carbon, and one layer of 17oz bi-axial glass.