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
NEW SKILLS DRILLS
Nowadays, the drill is not uncommon. Drill a hole in the concrete wall or polished metal part having a cartridge holder with a felt circle — in such cases it is indispensable. Wooden...
RELIABLE HEAD PROTECTION
The human neck is very perfect mechanism that performs many vital functions. However, it is very compact, flexible and surprisingly agile. All this allows to consider it one of the most...
