This video shows two related techniques for helping resin flow to areas of a part under vacuum. Often when performing resin infusion on a new part geometry, the tricky part is planning for a complete fill without resin waste. Normally it is best to suck the resin to where you want it to go, but the tradeoff is that as soon as resin reaches any airflow source, it will rush to fill that source ahead of completely filling the intended materials. John McGinnis from Synergy Aircraft uses a variety of techniques inside the bag to actively manage how much vacuum pulls from each portion of a part, so that technicians can guide the flow, but on a large job, it can be more practical to deal with minor stubborn spots after closing off the main resin source. Here, the guys have gone home for the day after a very successful large bagging operation, and the technique John would have shared with them is shared with everyone.
As a final note, the long cut made near the end of the video would normally have been done after pouring the resin, not before. This can often reduce the amount of unwanted air entry to nearly zero.
Companies: Synergy Aircraft
Technologies: Vacuum Infusion
Terms: Advanced, aircraft, Airplane, bag, bagging, carbon, composites, construction, fabrication, fiberglass, infusion, John, kevlar, McGinnis, repair, resin, Synergy, techniques, tips, vacuum, vacuum infusion, vacuum infusion composites, vacuum infusion machine, vacuum infusion mesh, vacuum infusion molding, vacuum infusion moulding process, vacuum infusion process, vacuum infusion resin