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
SAILING BOAT UNIVERSAL
If you manage to build such a mini-sailboat, you will immediately become the owner of a whole “fleet”! In fact: the boat of the proposed design, called “Hummingbird” by the author for its...
WALKING TRANSPORT
Existing models of walkers have several major disadvantages: the speed of these machines is usually not more than 8-10 km/h; they move irregularly or are experiencing vibrations in the...
