T-slot joint or cam nut- style plywood to the wall connection

Experimental study of steel beam-column joints with novel slot slot joints Buy 10 Pcs Straight Slot Butt Connection Aluminum Profile Joints Connector for Aluminum Profile Joints for Aluminum Profile at slot online anantabet How to create a fixed and sliding slot connection with the joint options in Autodesk Inventor

slot chisel slot or two biscuit slots with a biscuit in each slot? Hoa Dinh said I've done the 2-slot, 2-biscuits method on miter joints on end table top frames