Ryoba saws have a double-edged blade – with one side for cross and end-grain cutting and the other for ripping along the grain. This makes for a very useful saw for general-purpose traditional woodwork.
They are all slightly thinner in the middle of the saw to reduce friction when cutting through thick work pieces. The tooth spacing also reduces (creating a finer cut) from the front to the back so that when small cuts are made closer to the handle, it provides a smoother finish and better control. For this reason the tooth spacing listed below is an average in the middle of the blade.
Why Japanese Saws?
The most striking advantage of the pull stroke saw is the ability to cut accurately with less effort. There is less binding, buckling and breaking of the blade because the blade is under tension on the pull cutting stroke rather than under compression as in Western style saws. The ability of a saw to accurate cut along a line i.e. cutting control, is directly related to the saw's ease of cutting. Invariably, the saws that cut the most efficiently are the easiest to control.
Because Japanese saws cuts on the pull stroke, it permits the use of thinner, harder steel, and the blade can be much sharper. This will allow the blade's to have thinner kerfs, which reduces the effort of cutting because you are sawing a smaller amount of material compared to a Western-style saw, which means more smooth and accurate cuts.
Why Buy the Razorsaw Brand?
In 1969 the company marketing the RAZORSAW brand invented the system with the thinnest blade ever for the most efficient cutting. The introduction of this new disposable saw amazed the Japanese woodworking industry and its success has proved that this method of manufacturing Japanese saws has taken the world by storm.
RAZORSAW are continuously looking ahead. Development in the future will bring further benefits as they continue a history of combining human wisdom with technological innovation.
Each blade is impulse hardened. Impulse hardening is a new technique of heating for 1/1000 second by impulse energy at an extra high frequency resulting in hard and tenacious steel that gives remarkable durability. It is recommended you pull the saw towards you with a slight power keeping the edge at a 15-degree angle. Then push softly and repeat. Once you have used a RAZORSAW you will wonder how anything else in the workshop did the job.