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
“ACROBAT” – AEROBATIC …SNAKES
The first flight of kites I started to build in 1978. Dozens of options are made over four years, helped to define the tests, experiments and subsequent revisions to the best form and...
GLASS PLIERS
If a sheet of glass cut by a few millimeters, then break off the edge you better not side groove of the glass cutter, and pliers. In this strip of glass is often separated from the sheet...
