EXPANDER FROM BOTTLES

EXPANDER BOTTLEDIf you pick up a-liter plastic bottles of diameter to one (cut) densely entered second, you get the original expander, exerciser for the muscles of the hands. Adding to the bottom of any of these several holes, you can adjust the force required to compress and stretch. I used the bottle from the water “Darida” and “Berezinsky” turned out pretty well.

A. VINOGRADOV, Mogilev, Republic of Belarus

Recommend to read

  • THREE BLADES ARE MORE RELIABLETHREE BLADES ARE MORE RELIABLE
    We continue to publish models of rotochutes — winning flying competition for the Cup named after S. P. Korolev. Model Cup holder yurtaeva S. (Moscow) are described in the...
  • CATAMARAN “FRISKY”CATAMARAN “FRISKY”
    From the time of this writing I have built five catamarans of various designs. In designing, building and testing these boats took an active part my friend Anatoly Pavlovich Ignatchenko....