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
Crimean commuter trains
For several years now, Sevastopol inventor Dmitry Chulkov has been constructing electric vehicles. One of these is a universal modular chassis, equipped in the base configuration with a...
AND THE STUMP WILL COME IN HANDY
The stump on the dacha is usually not only a hindrance but also a problem: to root out its not so easy. However, you can not get rid of it, but rather made to serve. For example, using...
