Japanese Kanna: Pull-Style Hand Planes

Last reviewed on 2026-04-24

The kanna is the traditional Japanese hand plane: a wooden block, a laminated steel iron, and a secondary chipbreaker wedged together. It is pulled rather than pushed, and in skilled hands it produces shavings so fine they are almost translucent — a test of both the plane and the person using it. For Western woodworkers, kanna are an alternative rather than a replacement for Bailey-pattern bench planes, and they reward careful study of their own traditions.

Pull vs Push

A pulled plane uses different muscle groups — the biceps and back do more work, and the shoulders do less. For fine shavings, the pulled stroke offers direct visual control over the cut because the work is drawn toward the user rather than traveling away. Some woodworkers find it more accurate for the finishing stroke; others never adjust to it. There is no functional advantage that makes the kanna strictly better or worse; it is a different tradition with its own geometry.

The Laminated Iron

The kanna iron is two pieces of steel forge-welded together: a hard, high-carbon cutting layer (the hagane) on the back, and a soft low-carbon body (the jigane) on the front. The cutting layer can be honed to an extremely fine edge and holds it well; the softer body supports the hard steel and allows the iron to be tapped into position without shattering. This is the same lamination used in traditional Japanese chisels and kitchen knives.

The iron has a hollow ground into its back — the urasuki. This hollow reduces the amount of steel that must be flattened and kept polished. Only a narrow band around the edge (the ura) needs to be mirror-flat. Maintaining that flat as the iron wears is a separate skill, called uradashi, that involves tapping the softer jigane to extend the hard steel forward.

The Wooden Body (Dai)

The body, called the dai, is typically made from Japanese white oak. It is not flat from the factory — or rather, it is not flat in the way Western woodworkers expect. A properly tuned dai has two or three small bearing points: one at the front, one just before the mouth, and sometimes one behind. The area directly under the iron is relieved slightly so only those bearing points touch the work. This is called shitaba-naoshi and it is the biggest learning curve when moving from Western planes to kanna.

The dai responds to humidity. Left in a dry shop, it shrinks; moved to a damp environment, it swells. Many users check and touch up the sole at the start of every session with figured wood.

Setup

Hone the iron on waterstones. The back needs a mirror polish on the ura band; the bevel is ground at roughly 27–30° and honed at about 30–35°.
Tap the iron into the dai from the top, using a small hammer. The sides of the iron taper slightly to wedge against the matching taper inside the dai.
Set the chipbreaker (also tapped in) within a hair of the edge for figured wood, or a couple of millimeters back for general work.
Check and tune the three-point sole of the dai using a separate, flat reference and a dedicated scraper or sole-tuning plane.
Adjust the iron by tapping: tap the iron's head to advance, tap the dai behind the iron to retract, tap the sides of the iron to correct lateral alignment.

Using a Kanna

Work toward yourself along the full length of the stroke. Let the plane's weight rest on the work. On figured wood, a close-set chipbreaker in a properly tuned dai produces shavings that no Western plane will match. On straight grain, the plane requires very little effort and leaves a surface that shimmers.

Is It Worth Learning?

For most Western woodworkers, a good Bailey-pattern bench plane does everything a kanna does. But kanna are exceptionally capable tools and a different tradition well worth exploring, especially for fine surface finishing and for work with Japanese joinery. Start with a single good-quality kanna (a 60–65 mm iron is the traditional beginner size), budget time to learn dai tuning, and expect a few months before the tool feels natural.