Material
Wood screws
A joint you can tighten, take apart, and repair.
Get to know it
Match screw length and diameter to the actual pieces. A screw must enter enough sound wood to hold while its tip stays safely inside the assembly. Pilot and clearance holes serve different purposes: the outer piece must be pulled against the receiving piece.
Keep screw positions away from fragile edges and inspect both faces after driving. End-grain joints and thin sheet edges can be weak; choose a suitable joint rather than relying on a larger screw.