Mother Russia is rich in earthly gifts. Among them not last place is occupied by precious, semiprecious and ornamental stones. One Ural! It is therefore not surprising that in Russia, many artists and fans involved in the processing of ornamental stones. And in order to do this successfully, little one desires and abilities – you need a special tool and at least a minimum of equipment; diamond circular saws and accessories for cutting ceramic tiles. However, there are two “but”. First, their application area is quite limited (e.g. diamond discs have a thickness of 2 mm or more, in many cases for cutting ornamental stones are not acceptable). Secondly, their value, to put it mildly, inadequate to the modest income of the average working Russians, especially pensioners.SELF-PROPELLED PLOW
By itself, the plow actually riding. But it has become possible to plow without a horse due to all the same self-propelled chassis, which we used for the potato digger. This unit is convenient for the gardeners, naturalists, the owners of the gardens. As shown by tests, it can be a few hours to plow Read more…
For many operations performed in the training workshops and technical circles, very comfortable would be portable universal tool like dental drill. However, to acquire such is almost impossible, and, as always in such cases, the question arises: is it possible to make something similar on their own?
The vast majority of household electrical appliances aren’t grounded. At first glance, it is not necessary: the chassis devices are securely isolated from the network, and work with them, usually in dry areas with non-conducting floors. But to rely entirely on technique impossible. If the breakdown or damage to insulation — faulty device becomes a source of serious danger. Fuses are useless: they will not burn out until there is a short circuit.
Nearly five years, the ousting of John Holland, a private company in 1904 came to a natural end. Amateur inventor had left the firm and his place was taken by young and energetic professional Speer. However, the impact of such a significant figure at the successor remained in force. The first series of submarines SPIRA, type “B” was the direct development of the “hedgerow” and the actual “Hollands”. And in the creation of the project participate directly to the Patriarch of the underwater shipbuilding. Fortunately, the task before the designers enough.
In most jigsaws, with whom I had to deal, there is provided a cantilever clamp blade relative to the mounting bolt (Fig. 1). Because of this, I think, often encountered distortions of the working body, and the canvas breaks down, not having served on time. And to release such a clip when changing the saw blade gave a hard, requires considerable force.