Trying to figure out how to keep the bag to stay tight all the way through the infusion process. there’s absolutely no leaks before we start infusing the resin. But as soon as we open up the resin inlet line the inlet side/area of the bag loosens up and it really never get a tight until the resin starts to gel. Anyone have this issue or does anyone know how to fix this issue. I’m finding small pitting on the surface and only on the inlet side so i’m guessing g it’s happening from the bag being loose on that side.

thanks for the advice again MarkMK We have been getting almost near perfect parts once we lowered our resin pot lower than the mold and restricting the resin flowing in just a little bit. Not to the point where the part looks like it’s starving but just enough to keep the bag tight through out the whole process. We also started degassing the resin upfront seems like that also eliminated a lot of the small surface pitting that we were getting. Those were the only two things we changed and we are getting better results now. Not sure if if it’s one or the other that gave us the results or both of them togeather. I usually like to only change one thing at a time but we just didn’t have anymore testing time, we had to start producing parts. We also noticed that the parts would come out pit free but as soon as we cleaned them up to spray our flat clear coat on them (per customers choice) the acetone we were cleaning the parts with was actually removing resin off the surface and breaking into the fabric and causing surface pores. Needless to say no more cleaning of the parts with knarly solvants.