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
EXACTLY SPIRAL
Device for spiralno lines are usually quite complex in design, can not be said about the method of its receipt. A circular boss fixed to prepared for the drawing surface; the wound on...
MINI-MOKIK: SCHOOL OF DESIGN
Small cars and motorcycles always aroused great interest among Amateur designers. This is understandable: a vehicle having a small size and weight, low fuel consumption, well fit into...
