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
FLOOR WITHOUT DIFFICULTY
Over time, hardwood floors begin to creak. To eliminate this unpleasant defect by applying supporting rods. I have done that. In a few places drilled the boards with joists through the...
THE KINGDOM OF UNFINISHED
Almost all the Maritime powers of second rank, trying to create or radically change the torpedo power in the period between the world wars, faced a dilemma: either to buy the ships on...
