THE CONDUCTOR-TELESCOPE

THE CONDUCTOR-TELESCOPEOf tubes of different diameter, tightly placed one on another, you can build a jig for drilling end holes in cylindrical rods of various cross sections. For the outer bushings are better to use a steel tube with a thickness of 0.5 mm, and the inner insert can be bent any sheet metal.
 
V. MARTINTON, Novocheboksarsk

Recommend to read

  • GRINDING THE SEEDS? PLEASE!GRINDING THE SEEDS? PLEASE!
    Becoming a farmer, I was faced with the necessity of grinding of beet seeds and alfalfa. Asked how to cope with this problem experienced large farms, and that is, on the image made a...
  • WHO IS FASTERWHO IS FASTER
    You've probably heard: "he's Got good reflexes." Thicket just as they say about athletes. For example, the goalkeeper. He must react instantly to the ball rapidly flying into the net. Or...