The need for large apertures of various diameters occurs very often. Some cut them with a jigsaw, others use a drill and then sanded the edges with a file, others are turning to so-called centraliza — fit to a normal drilling machine.NOT ALONG AND ACROSS
For drying clothes usually are stretched one or two ropes, but wide things on them is placed a bit, you have to lengthen them. However, if the Laundry on the clothesline to hang not along and across, things would fit much more.





What happens if you cut a cylinder and two parallel planes at an angle to its axis and to replace the resulting “pancakes” wheels of a conventional car? It turns out that in the end we will get the vehicle of the increased passability. On normal roads this car moves exactly the same as a car with standard wheels, because at any point, the distance from the road to the axis remains constant, equal to the radius of the cylinder. Of course, with the difference that leaving a trail is not straight, but curved in the form of a sine wave.
The coil is the most convenient form of packaging thin sheet materials and for the transportation and storage in warehouses. Foil, a synthetic film or paper in a tightly collapsed become a monolith, convenient in handling and are not particularly suffering from the hard grips of different mechanisms.
This little car (Fig. 1) I did back in 1972, and it is already my second son, Sasha. He was only three years, but he leads the electric car is almost like a real chauffeur. The car became a favorite toy of kids all around, and how else — steering, brakes, lighting, sound signal, turn on the rear — all on this car!


