Currently in stores you can easily buy any necessary household products. At the same time, attention and creative efforts of Amateur designers more going on technically complex objects: tractors, ATVs, cars and even airplanes. Changing the homebrew approach to the implementation of the projects; they are not afraid of the need for self-production of complex and accurate parts, which moreover may be subject to strict requirements in terms of strength. One such typical elements present in almost all energy-intensive structures, are cylindrical helical extension springs or compression. In this regard, many of our readers will be interested and, hopefully, it is useful to get acquainted with the methodology developed by the Ukrainian engineer Vladimir Vinichenko, which will help the responsible production of springs with the required quality and accuracy.
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Gardeners will appreciate the trolley-sledge, shown in the figure, because it can be used all year round. Necessary, for example, in summer, carry some cargo, put it on the cart, put on wheels and roll her along the earthen path, grass, asphalt. But winter comes the turn of runners: turn the cart, and she was again ready to work.
So, ended walking through the shops in search of the desired colors of the future outfit for the walls of your home; purchased after consultation with the sellers the required number of rolls and packs of glue you would have to start wallpapering. However, where better to begin this work?
Not so long ago a Swedish doctor-hygienist B. Akerblom wrote the book on… of furniture, more precisely, about the simplest of its species on the chair. “Five thousand years of sitting incorrectly!” he argues, based on numerous anthropological and anatomical data. His insights not only interesting and practical recommendations for professionals. They indicate that the furniture is still little developed, and therefore, extremely exciting field of technical creativity.
