Pouring solutions of chemicals in the bottle, Amateurs are plastic or glass funnels. First trouble do not deliver: special ribs on the outer surface do not allow them to fit snugly to the necks, and displaced fluid with the air out of the bottles without interference. Edge for glass can be formed by bending, as shown in the figure, the cut copper wire Ø 1 mm.
A. KAMALOV, Obninsk, Kaluga region
Recommend to read
MACHINE FOR CHARGING NI-CD BATTERIES
The Internet caught the eye diagram of the automatic charger Ni-Cd batteries developed by Yuri Bashkatov. Assembled the circuit on the breadboard — not working. Modeled it on the...
ELECTROBOILER
The idea to use as a vehicle motor wheel is tempting. She became interested in members of the laboratory design of compact machines Cute Siberian branch of the USSR ninth-graders Sasha...
