The blade sits in the body at 12°; it comes with a 25° flat ground bevel, making the included cutting angle 37°.
Blade adjustment is simple, direct and positive. Hold the tool in one hand with your thumb on the cap. Loosen the cap thumbscrew all the way, then tighten slightly until there is a little resistance. Adjust depth of cut with the blade adjuster nut. Sight down the base of the tool from the front, and judge depth and squareness of blade by the thin dark line of the blade showing against the sole as it protrudes. When you are done, snug the cap thumbscrew. Do not overtighten.
The blade is about .005" wider than the body. For general purpose work the blade should be just slightly proud of both sides of the tool. When registering into a corner, align the edge of the blade with the side of the body that you want it flush with (laying the tool on its side helps to do this quickly and accurately). To remove the blade, you must lift the back end and tilt it to the side to clear the sidewall of the tool.
This tool is set up to take thin shavings (.008 - .010"). A tool with a large mouth will not perform as well on finish cuts. If you need a heavier cut, the tool can be easily modified by filing a chamfer on the leading edge of the mouth to allow a bigger shaving to pass.
The Low Angle Jack Rabbet Plane intentionally has very little lateral adjustment of the blade. This is an advantage. As you adjust the blade, it will track squarely with the sole. The disadvantage is that you must sharpen the blade square. We recommend our Honing Guide to help with this task. If you find that you don’t like this feature, you can grind the blade narrower to give more lateral play.
Nickers cut cross grain fibers first to give a clean shoulder when rabbeting across the grain. The circular A2 nicker is retracted when the flat is at the bottom. Rotate to expose the edge as needed. When fully exposed the nicker protrudes .015". Occasionally, you may need to hone the back (flat) side of the nicker on a fine waterstone to sharpen.