“From work saw burn until white!” — wrote Vladimir Mayakovsky in his poem “Whom to be?” Meanwhile, heat the cutting tool in the first place means that he is dull. In this case, the joiner, as of old, takes padpilot (triangular file — in modern terminology) and manually sharpening the teeth of a handsaw. Much hard work and unproductive work! But maybe, and this operation can be mechanized? There are also sharpening machines for milling cutters, disks of circular saws… However, here’s a review on the machine, developed by ninth-graders of high school № 28 of Ust-Kamenogorsk city under the leadership of teacher A. A. Boytsov: “bench grinder will find wide application not only in school workshops, but in the joiner shops of the construction companies and carpentry teams on any construction site. The machine is easy to manufacture and allows you to sharpen the various woodworking tools — hand saws, the blade semi-circular and chain saws”.
Chief engineer of the trust “Vostokkaznedra” G. I. Aksenov, the signatories of this opinion, adds that the machine dramatically increases the quality of the sharpening tool and significantly reduces manual labor, that allows to recommend its application in various sectors of the economy.
How is this the original grinding machine? Here’s what says about it the head of the circle of young designers AA Fighters.
First of all a few words about the main characteristics of the grinding machine. Maximum length of grinding is 600 mm, which is enough for most carpentry hand saws. The grinding angle can be selected within a wide range depending on the used tool — grinding wheel.