Miter Weakness
End grain to end grain joint. Glue alone insufficient. Mechanical reinforcement essential. Various methods strengthen joint.
Splines
Thin wood cross joint. Cut slot after assembly. Glue spline in place. Decorative or hidden options.
Keys
Similar to splines but visible. Cut at angle to joint. Contrasting wood adds decoration. Requires jig for accuracy.
Other Methods
Biscuits align and add strength. Dowels pin joint together. Pocket screws from inside. Combination approaches maximize strength.
