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
WATER MOTORBIKE
The pedal boat is a machine that has long been mastered by technology lovers, both young and old. Two light floats connected by a simple bridge, and on it is a frame from an old bicycle...
FLYING SAIL
This model can be built in 4-6 hours. It flies well indoors and outdoors. It is designed and built model airplanes Khabarovsk regional station of young technicians. The fuselage is...
