Woodworker's Journal 2009-33-2, страница 23

2. Double Rabbet Twin rabbets combine to make carcass assembly easier.

Double rabbet joints offer the same self-aligning benefits as overlap rabbets, only this time, both parts are rabbeted to fit together one over the ' ' -■•'■■■'. '" other. If you don't own a biscuit joiner or a pocket-screw jig, here's a good alternative for bringing those cabinet or box carcasses togel her with fewer headaches. The stepped design of the joint will keep big panels from shifting out of whack once glue is applied and you're installing the clamps. Then, lock the parts with brads to strengthen the glue bond and form a mechanical connection.

The most efficient way to cut double rabbets, especially on larger workpieces, is facedown on the saw table with a dado blade. If you adjust the proportions of the rabbet carefully, so the tongue is exactly half the thickness of the workpiece, one setup takes care of both halves of the joint in short order.

Install a featherboard over the blade to keep workpieces pressed down firmly during cutting. Cut the rabbets. Support the joint parts from behind with a miter gauge if they're longer than they are wide.

First, clamp a sacrificial facing to your rip fence so you can bury a wide dado head partially inside it. Adjust the blade's cut off of a marked scrap piece (see inset) to establish the rabbet proportions.

Glue alone won't offer enough reinforcement for double-rabbet joints, so follow up with pin nails or brads. Drive fasteners through the side of the joint you're less likely to see in the finished project.

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