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
TWO IN ONE
The idea is to make two-cylinder engine came to us with the son, that is, from want. In times of General scarcity in the economy was necessary for some vehicles to have the house and...
TAKE OFF WITHOUT A RUNWAY
Vertical take-off fighter RYAN X-13 VERTIJET. In our day, aviation experts, it is difficult to surprise aircraft with variable thrust vectoring, or with gas rudders and the vertical...