When processing large surfaces of metal or wood with sandpaper craftsmen have to attach it to various devices. We offer original clasp allows you to do this conveniently and quickly. It is a kind of wooden “book” with the “dust cover” of the skin, the ends of which are filled inside and securely fastened when closing with two rows of sharp Shura stand or studs. “Binding” is the piano hinge.
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MILL IN MINIATURE
The proposed mini-mill was made a few years ago, eighth-grader Edward Sarkisov in the circle of technical creativity in school No. 17 in the city of Vladikavkaz. It is designed for...
THE DIAMETER OF THE LINE…
To know the exact diameter of the wire will fail, and no micrometer or Vernier caliper, if you use ... normal range. This is quite tightly wound on the rod a small number of turns of wire,...
