Joinery 101
Joinery is the art of attaching one piece of wood to another. Interlocking joints, mechanical fasteners, and adhesives are the joinery resources we have available.
Many modern joinery techniques were actually in use thousands of years ago. And after all those centuries, mortise and tenons and dovetails are still the best methods.
A joint is considered to have mechanical strength to the extent that the pieces of wood physically interlock. It is considered to have glue strength to the extent that long grain-to long grain cpntact creates a strong glue bond.
The major factor the woodworker must cope with when joining wood together is wood movement.
Coping with wood movement
Wood movement becomes a problem when two pieces of wood are joined in such a way that the cross-grain expansion of one piece is inhibited by the long-grain stability of the other piece.
Consider the example of a simple breadboard. The grain of the center piece and the grain of the cap pieces -- which are mated in a tongue and groove joint -- are oriented perpendicular to each other.
The stable way to peg these pieces together is to make elongated peg holes in the tongue sections of the center pieces so they can expand and contract without resistance.
Similar methods must be used in each joinery technique to ensure wood movement doesn't become an issue.
Woodworking Key #3: Use a golf too to fix loose interior hinges.
A golf tee provides a quick and easy fix for loose interior door hinges.
Remove hinges and door from door frame and lightly tap one golf tee inside each of the screw holes.
Trim off the end of the tee still sticking out and hang the door again.
The screw has something to bite on with the golf tee.
Types of Joints
Mortise and tenon joints
Dowel joints
Dovetails
Box Joints
Tongue-and-groove joints
Spline joints
Biscuit joinery
Sliding Dovetails
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