Popular Woodworking 2005-12 № 152, страница 58

Casework Frame Joinery

Good

Butt

This joint really doesn't belong in the "good" category. It's structurally weak and provides poor glue adhesion.

Miter

A corner miter offers slightly better strength than a butt joint because of the short-grain match, but it still won't hold up to much abuse.

Half-lap

A good corner joint, the half-lap adds strength and more gluing surface, but requires accurate machining and is a very visible joint.

Better

Butt with Dowels

Adding a mechanical fastener (spline, biscuit or dowels as above) greatly improves the strength of this corner joint.

Miter with Biscuit

Biscuits offer improved strength and alignment for what can be a tricky and weak corner joint. Dowels are also an option here.

Corner Bridle

Better than a half-lap, the bridle joint offers greater strength, more gluing surface and security against racking.

Best

Mortise and Tenon

The ultimate in frame strength, the mortise and tenon guards against racking, is strong with lots of gluing surface and is invisible.

Miter with Spline

Another way to strengthen a corner miter is with a spline. Beyond the adding gluing surface, a spline can be used as a decorative element.

Haunched Mortise

A variation on the mortise and tenon, this joint allows a panel to be added into the assembly with less work than a cope-and-stick joint.

A Step Further

T-Lap Dovetail

Better than a half-lap, the dovetail lap adds locking strength for either a corner joint or mid-rail joinery, but requires even more accuracy.

Cope & Stick

Frames in casework needn't always be plain. A frame-and-panel design dresses up a piece and adds strength.

Wedged Through-tenon

A great visual element and very strong, the wedged through-tenon takes some practice but adds amazing strength.

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