Choosing & Using Japanese SawsComments (2)
This article is from Issue 72 of Woodcraft Magazine.
Expand your tool arsenal with handsaws that belong to a centuries-old tradition of craftsmanship
Today I teach Japanese woodworking techniques and take on custom woodworking projects in my Brooklyn studio, but my first exposure to Japanese-style woodworking was entirely accidental. When I began to learn woodworking in a cabinet shop, we worked primarily with power tools. The one handsaw we had was a Japanese “pull saw.” My mentor explained that “we use it because it works great.” I gave it a try and...wow! I was “pulled” in. I purchased my first saw and the pleasure grew—motivating me to undertake a formal apprenticeship with a Japanese woodworking master.
You don’t have to be devoted to Japanese woodworking to appreciate the unique qualities of Japanese-style saws. In this article, I’ll provide details on choosing and using the three types of Japanese saws that enable you to do a wide range of cutting by hand.
Pull saw pros and cons
The pros and cons of pull saws have a great deal to do with their thinner blades and with the way that crosscutting blades are sharpened (see photos below).
- Less energy required for cutting.
- Faster cutting than Western-style handsaws.
- More flexibility in cutting positions.
- Thin kerf is an advantage in certain situations.
- Saws with replaceable blades eliminate the need to sharpen or repair a dull or damaged blade.
- Long handle accommodates two-handed grip when necessary.
- Crosscutting teeth can be easily damaged by misuse or accidental impact.
- Too long to fit in a toolbox. (But folding pull saws overcome this limitation.)
- Dull or damaged crosscutting blades are difficult and time-consuming to resharpen.
- Straight handle will feel strange to Western-style saw users.
Ryoba saws are all-purpose performers
The workhorse of Japanese saws, the ryoba is easy to identify because it has two sets of teeth—one for ripping and one for crosscutting. If you’re new to hand-sawing on the pull stroke, I recommend using a ryoba as your “starter” saw.
Ryobas are often described by blade length (in millimeters), because this usually indicates the saw’s main uses. In general, shorter saws have finer teeth, enabling you to do more exacting work. A 210mm (81⁄4") ryoba is for furniture. I use my 240mm (91⁄2") ryoba for general carpentry. A 270mm (103⁄4") ryoba is for larger work, like timber-frame joinery. If you look closely at the ripping side of a ryoba saw, you’ll notice that the teeth are smaller at the heel of the blade, which makes it easier to get a cut started.
My 240mm blue hard Gyokucho ryoba (see Buyer’s Guide on p. 61) is a favorite of mine because of its versatility. Though this saw’s teeth are ground for cutting hardwoods, they will do fine cutting softwoods as well. The teeth are fine enough for very precise cutting—the next-best thing to a dozuki saw for joinery work.
When just starting to use a ryoba saw, it may seem difficult to make a straight cut with such a flexible blade. The secret is to plan your cut so that the kerf you initially make can guide the blade as you finish the cut. Make a cut in stages, as shown below, and you’ll be surprised at the accuracy you can achieve.
Cut tenon cheeks with the ripping blade.
Start cutting at the top corner of the workpiece, and maintain a diagonal stroke that follows the layout lines on adjacent surfaces. Cut all the way to the top shoulder and bottom corner. Then switch to a vertical stroke. The existing kerf can guide the blade as you complete the cut.
Crosscut from one side, then the other.
Start the cut at the top corner, and maintain your cutting angle as you saw. When the kerf extends nearly all the way across the top of the workpiece, change your cutting position so the top kerf can help guide your cut into the near side of the workpiece.
Dozukis excel at fine joinery
Once you’re comfortable using a ryoba saw, you will want to make even finer cuts. The dozuki is just the ticket. Like a Western backsaw, it has a thick steel spine that keeps the blade rigid as you cut. But unlike a Western backsaw, a dozuki cuts on the pull stroke, and it has a much thinner blade that excels at precise cutting. The word “dozuki” means shoulder cut, and these saws are designed for cutting tenons and dovetails. With practice, you’ll be able to use a dozuki to cut joints that require little or no paring.
The wide blade on the dozuki I’m using here enables you to make deep cuts, but dozukis with shorter, narrower blades are also available. They cost less, but can still handle most of the joinery work required for furniture construction.
Dozuki for dovetails.
The dozuki’s teeth are sharpened for crosscutting, but they’ll do a fine job with the short ripcuts required for hand-cut dovetail joints. After cutting the corners free, I’ll remove the rest of the waste with hammer and chisel.
Choose a kataba yokobiki for deep or long crosscutting
What comes next after you’ve acquired ryoba and dozuki saws? For many woodworkers, the answer is the kataba yokobiki. “Kataba” translates as “cutting on one side;” “yokobiki” is Japanese for “crosscut.” This saw is designed to take up where the ryoba leaves off. If you have to make a deep or long crosscut with a ryoba, the smooth cut made by the ryoba’s crosscutting teeth will be damaged by the ripping teeth on the opposite side of the blade. The kataba eliminates this problem. The kataba’s other common use is flush-cutting, which should be done by protecting the workpiece with a sheet of paper.
Visit our website to see other pull saws you might want to add to your hand-tool collection.
Razorsaw Crosscut with Replaceable Blade - 240 mm - No. 400Item 02P62
Harima Ryoba Saw 210mm with Canvas CoverItem 06Q11
Dozuki Saw 240mm With Replaceable BladeItem 12F27
Dovetail Saw with Replaceable Blade - 240 mm - No. 311Item 155605
Flush Cutting Single Edge Saw - 100 mm - No. 1150Item 155648
Dozuki Saw 240mm No. 306 - GyokuchoItem 155679
Flush Cutting Double Edge Saw - 125 mm - No. 1151Item 155681
Kataba Saw with Replaceable Blade - 255 mm - No. 105Item 155690
Keyhole Saw Hikimawashi Nokogiri 4 inch x 15tpiItem 157007
Flush Cut Saw (Nail Saw) with Replaceable BladeItem 157072
Folding Blade Woodworking Saw No. 0570 with Replaceable BladeItem 159594
Silky SawsItem 415733
WOODBOY Dozuki 240mm, 27 TPI, without backboneItem 415734
Silky SawsItem 415735
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