Crafters

Mitre joint

The Mitre joint: how it is made, how strong it is and where it is used.

All joinery
Strength
low
Difficulty
easy
How it works
Two pieces cut at 45 degrees meet at a corner so no end grain shows. Weak on its own; reinforced with splines, keys or biscuits.
Typical uses
Picture frames, trim, boxes
Tools
mitre saw or mitre box