
A great tool for making holes in concrete, ceramics, brick is obtained from a carbide cutting plate lathe cutter, driven on the grinding wheel to the shape of a disk with a tapered cutting edge. Mandrel for mounting in the Chuck is machined from steel rod Ø 12 mm. Disc is mounted on the axial groove with the screw M5.
V. KNYAZEV, Leningrad
Recommend to read
BOMB MODELS
Aerial bombs are divided into three types: primary, secondary, and special assignments. The first are high-explosive, fragmentation, armor-piercing, incendiary, and some others, the...
MODEL ROCKET PLANE WITH BOOSTER
This publication, we continue the story about the history of one of the categories in the rocket modeling - S4. It includes four classes of models raketoplana (model glider with the...