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
CAN OPENER-GREGORATOS
The knife, which I did, the commercially available and opens cans faster. Its basis was a steel tube and rod, a part of her. The end of the rod is bent, it is inserted, and then open...
WITH ONE CALL
In your journal in one of the rooms of yesteryear has published an article — "the plug". I must say that the proposed options combined metal dowels rather complicated to manufacture, but...