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
Milling cutter instead of a plow
The tiller developed by Heinrich Alekseevich Kuznetsov differs from many homemade designs by using cutters instead of a plow. Rotating on the working shaft, they simultaneously till the...
TRANSPORT SIBERIAN HINTERLAND
"I live in a remote Siberian village, which last year was 370 years. Near the river Angara. This is the Central district of Krasnoyarsk region, where winters with strong frosts and heavy...