A Gyokucho razorsaw with a retractable saw design. The saw comes already fitted with a general wood work blade but can be replaced with a live wood blade, plastic/cardboard blade/metal blades.
General wood work blade length is 80mm
Overall length is 100mm
Blade thickness is .45mm
TPI = 1.3mm/19.5
Contains the retracting casing and one blade. Additional blades can be purchased from www.japanesetools.com.au.
Gyokucho invented the first replaceable blade Japanese saw back in the 1970’s, and still lead the industry in terms of quality and innovation.
The blades receive a special surface treatment called electroless nickel plating. The plating produces a very smooth surface that resists corrosion and the adhesion of tree resins as well as providing a reflective surface that can be used to accurately align the cut.
The teeth of Gyokucho saws are hardened by a highly developed version of impulse hardening – only the very tip of the tooth is exposed to exactly 27.12MHz for between 3 and 5 milliseconds, the resulting shockwave case hardens the outside of the tip of the tooth to well over RC67 (harder than a file) while leaving the interior soft for maximum strength.
With careful daily use in a professional workshop, we would typically expect a Gyokucho saw blade to last between 5 and 7 years.