I offer hobbyists a homemade desktop drilling machine that uses a hand drill. A hollow tubular column is mounted on a sturdy base, and a rod is installed inside it so that it can move. On one side of the rod a toothed rack is cut for the vertical feed drive, and on the other Read more…
Which exhibition exhibit is the most interesting? Obviously, the one with the most visitors, the one most often aimed at by camera lenses. That exhibit at the 1984 Moscow City Exhibition of Youth Scientific and Technical Creativity was the “Vyatka-1M” walk-behind tractor, built in the auto-design club of the Palace of Pioneers and Schoolchildren named Read more…
I offer you a shelf of a very simple design, consisting of just five parts. The reason for making it was that I had accumulated a large number of baby-food jars. The shelf is designed to hold five jars, although their number can be increased or decreased by changing the dimensions of the corresponding parts. Read more…
In a well-known encyclopedia of the century before last, “Industry and Technology,” in the volume on the “processing of fibrous substances,” which wood also is, it is said that “in work on dividing wood … splitting is of importance.” And further: “a wedge-shaped tool bends apart the parts of the wood being separated; here the Read more…
Every time the whole family is getting ready for a vacation, I have the task of checking the condition of our bicycles. As a rule, all the parts are in perfect order, except for the tires: they need to be inflated periodically. That’s when you sometimes have to work up a sweat, and a lot Read more…
It is well known that metal hacksaw blades are made of excellent steel, so any fragment, even a small one, can be considered a starting blank for a wide variety of cutting tools. The options given here are far from exhausting the variety of devices that can be made from broken saw blades. First of Read more…
As is well known, sun, air, and water create the most favorable conditions for recreation. So it is no surprise that on a hot sunny day so many people gather on sea beaches and by the banks of a river or pond that there is literally no room to spare. Unfortunately, well-equipped beaches are few. Read more…
Compactness, maneuverability, and good traction characteristics are the undoubted advantages of the single-wheel tractor built at the young technicians’ station in the city of Novotroitsk. They were achieved by using a layout unusual for walk-behind tractors — “wheel–motor” — which gives the machine minimal dimensions and a simple transmission. It is no secret that large-diameter Read more…
This security alarm device (SAD) is intended for automatic sounding of an alarm signal (electric bell) in case of unauthorized entry of outsiders into a protected premises — an apartment, a country house, or a garage. It features higher noise immunity and the absence of false alarms. The device is powered by a 12-volt battery Read more…
Perhaps in every adult’s memories, childhood winter fun is inevitably linked with sleds. And one can say with confidence that even today you will rarely find a home without them: they still serve children, and adults too — to take a toddler to kindergarten, or to carry a small load from or into the house Read more…
