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.
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THE EDGE WILL BE SMOOTH
If you make the fixture shown in the picture, then cropped the Wallpaper strip will have the same dimensions and strict perpendicularity of the cutting line.
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It so happened that almost all the children's toys with a muscular drive — pedal cars, maps, bikes — designed for use in main leg muscles. And almost none of these machines work the...