Mortise and Tenon or Dado for a Cabinet Box

Pull a drawer box out of an old cabinet and look at the corners before anything else. The joint tells you who built it and how long the box will last. The breakdown sitting on cabinet maker austin studio antwork lists the common joints in order of how much load each one carries in a cabinet, from the face frame down to the drawer, for homes across Austin.

Mortise and tenon in the face frame

A mortise and tenon is a square pocket cut in one piece and a matching tongue cut on the end of the other. It resists racking better than a butt joint with screws, and it gives the glue long grain to grip. Face frame rails meet stiles this way when the frame has to carry doors on euro hinges and take years of opening and closing. A tenon is cut on the table saw with a tenoning jig, and the mortise is cut with a router or a hollow chisel mortiser.

Dado joints in the carcass

A dado is a groove cut across the grain of a side panel so a shelf or a bottom can sit inside it. The groove locks the shelf in position and spreads the weight over the whole width of the panel instead of a few screws. A plywood box with dadoed shelves stays square even when the shelves are loaded with dishes. The dado is cut on the table saw with a stacked dado set, and the width is tuned to the actual thickness of the plywood.

Rabbets at the back and the corners

A rabbet is a step cut along an edge. It holds the back panel of a carcass flush inside the sides, and it joins the corners of a drawer box where two parts meet at a right angle. A rabbet gives a glue joint two surfaces rather than one, which a plain butt joint never has. A dovetail drawer takes the same idea further, with interlocking pins and tails that stop the front from pulling off when someone yanks the handle.

Matching the joint to the job

Frameless cabinets rely on the box itself, so dados and rabbets matter more there, while a face frame cabinet leans on mortise and tenon at the front. Solid wood in a hardwood like maple or oak will move across its width through an Austin year, so a joint that locks wide boards rigid across the grain can split them. Joints are chosen part by part, not once for the whole kitchen.

Cutting them on the table saw

Every one of these joints depends on the saw being set up honestly. A maker cuts a test joint in a scrap of the same stock before touching the real parts, and then checks the shoulder against a square. Most of the work in a good cabinet is that careful setup, repeated for each part in Austin, TX.