We have done several jobs using the ‘resin infusion’ process before which is an excellent way of producing a composite part without picking up a brush! This process introduces the resin into the job using the vacuum pump suction which draws the resin through all the material whether its glass fiber, core or other reinforcement. The vacuum pressure keeps the resin to fiber ratio very low saving weight and material. It also consolidates the laminate perfectly without any air bubbles.
The photos below show another job we did making a centreboard. In this instance we applied the epoxy adhesive by hand and then vacuum bagged the foam core into the mould. This is the best way to apply even pressure to the core pieces and achieve a good bond. This epoxy centreboard is built in two halves and then joined together.