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
AT FULL GALLOP ON A SPRING…
In Moscow last year in the framework of the "Moscow courtyard" is an accomplishment of territories near houses: broken rekultiviruemye new or old lawns, flower beds, public gardens,...
INSTEAD OF A JACK — A SCREW
"Juice with a jack" — that's what the article was called, published in "Modelist-Konstruktor" No. 4 for 1998. I liked the simplicity and unconventionality of the technical solution...
