This simple device facilitates the use of any tube, helping to squeeze it evenly and gently. It consists of a base in a hole which is inserted the tube, and turning a key with slit for exciting a planar end of the tube. The base and key are made of wooden bars of appropriate dimensions. Their interaction is clear from the figure.
Recommend to read
WING — ON THE RISE
The peculiarity of the proposed model rocket class "Hawk" — the displacement of the wing at takeoff. As this increases the area of the tail section, shifting the center of pressure of...
SO AS NOT TO CREAK
Even the most Mature person reacts to squeaky door hinges in the house is so unpleasant and irritating they sound. And if the split lubricating door hinges you can without much of a...
