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
BROKE AND WORKS
Blade of the hacksaw on the metal is quite fragile and often breaks. The lean master will never throw away the debris: manufacture of them auxiliary short nail file, a knife, a Bong. ...
HOME MACHINE-TRACTOR STATION
Since childhood read "modelist-Konstruktor" — he learned a lot of interesting technical ideas and developments. According to publications in the journal while still in school, redid the...
