Which joint is created by cutting a slot across the face of a piece of timber about three-quarters deep, with the second piece inserted into the slot?

• A. Housing Joint
• B. Butt Joint
• C. Dowel Joint
• D. Biscuit Joint

Answer: (A)

This describes a housing joint. By cutting a slot into one piece, you create a recess that the second piece fits into, so the two parts join securely with good alignment and a large glue surface along the joint. This explains why the second piece slides into the slot and sits flush with the face.

This isn’t a butt joint, which has no recess. It isn’t a dowel joint, which uses pegs, and it isn’t a biscuit joint, which uses slots in both pieces to receive a biscuit. The single recessed slot with the other piece inserted directly matches the housing (dado) joint idea.