Reply by sphere

“How about an unglued, pinned, through mortise and tennon…”

Much better engineering wise IMO. All the DT’s do is add weak pull out resistance due to the short grain of the tails and the thin edges of the groove.

Just racking the tail on assembly and it will fracture out somewhere.

Sounds like a time bomb looking for a place to happen.

-- Spheramid Enterprises Architectural Wood Works