The result looked really awful. The tabernacle looked very heavy and the spine rather light. It looked kinda perched there.
The tabernacle is made from Jarrah, with 16mm thick side plates and a solid wedge shaped piece between them. I bored an 18mm dia hole for the mast pivot bushings. I'll turn up some bushings to go in there and use a 12mm bronze shaft for the mast pivot. I'm waiting on some 12ga bronze screws to screw the base of the tabernacle down to the bridge piece. I'll attach the centerboard lifting block to the back of the tabernacle once it's installed.