The daggerboard case is made of marine plywood and I discovered the hard way (at least after two failed vacuum bags) that the porosity of the plywood makes it impossible to make an airtight seal with sealant tape onto the wood. Something to remember for all wood builders. The vacuum infusion was done with two bags, one for the infusion and one for the vacuum integrity. A stopgap and not something to copy !
Making the daggerboard case.