Amana Tool has developed a matched pair of cope-and-stick router bits that produce true divided-light cabinet doors with mortise-and-tenon joints.

The first bit shapes the decorative sticking with a rabbet for the glass. A second bit makes the corresponding cope and cuts tenons for joining frames.

They’re available in two sizes: one for material from 3/4 in. to 7/8 in. thick (No. 55360; $138) and a second for material from 7/8 in. to 1-1/2 in. (No. 55362; $168). Both sets require mortising the frame members in a separate operation.

Precise layout of the stiles and rails is essential, but when the mortises are placed accurately, the set creates strong, clean-looking joints. Shims are included for any misalignment, but I didn’t need them as the parts fit together perfectly.

There is one drawback with the bit profile: Used with 3/4-in. stock, it leaves only a 1/4-in. rabbet for the glass, so typical 1/4-in. glass stop won’t fit behind the glass. Otherwise, the set is an accurate and efficient way to make dividedlight cabinet doors.