Recently infused three test panels inside one vacuum bag. All three panels were four ply. First panel was 3K 6 oz twill. Second panel was 3k 12 oz flat tow plain weave. Third panel was 12K 18 oz flat tow plain weave. The first panel full infused but the other two did not. The question I have is did the vastly different architecture of the materials cause the incomplete infusion? What other factors might have been at fault.