CMT - 300 Dovetail Jig
The CMT 300 Dovetail Jig cuts standard and rabbeted half-blind dovetails.
Unlike most tested, the CMT 300 Dovetail Jig comes unassembled and requires about 20 minutes of assembly. The standard jig comes with a template for cutting standard and rabbeted half-blind dovetail, and other templates are available as accessories for cutting through dovetails and box joints.
The settings on the jig were stable and the final results excellent. I liked the fact that this jig used an adjustable template to adjust the depth of cut. But there were a number of shortcomings with the CMT 300. The jig comes with fixed offset guides, so in order to achieve symmetrical joints with half-pins at each end; you must cut the stock to one of eight standard widths. Also, the router guide included did not fit any of the routers I own, so I ended up using a standard guide in its place, which had to be ground shorter to work. Last, the jig relies on clamp screws to secure the parts instead of the quick-action levers provided on most of the other jigs, which I prefer.
The operating manual is in two booklets for a total of 23 pages. One booklet contains the text, the other the illustrations. I found it hard to jump back and forth between the two, and the use of both metric and imperial measurements added to the confusion. Also, the manual specified a bit height of 11/16 in. which was beyond the capacity of the bit that was supplied. It turned out that the proper height was 9/16 in. A list of replacement parts was included.