Im no wizard, when using routers, jigs to make slots are everything you need in low Budget Jobs.
It didnt came out very true but epoxy resin will do the rest.
I put 4 layers of 6 oz fiberglass and one 5 oz. carbón layer on the base to decrease Wood plate flex and spliting when using bolts.
Im kind of stuck right now because im waiting on resin to arrive by mail.
I will post pics as son i i get every thing on track.
today is windy so no woodworking today!!