The electroforming technique of electrolytic deposition of metals on the surface of various objects (matrices) with the aim of obtaining accurate metal copies were first developed and applied in practice in 1838 by the Russian scientist, academician B. S. Jacobi. With his direct participation had made many great works of art, statues and bas-reliefs for St. Isaac’s Cathedral, Hermitage Museum, Winter Palace, Peter and Paul Cathedral, including the famous Quadriga to front of the Bolshoi theater in Moscow.
Read more
The problem of small apartments, popularly referred to as “crushable” are forced constantly to seek the “surplus” of housing. So this time, when bought the printer, I had to bring ingenuity. However, the solution was found pretty quickly.
The two elements 373, light bulb 3,5ВХ0,26A, a strip of sheet brass with a thickness of 0.5 mm (150×5 mm), cut cardboard (150X X200 mm), cotton thread, glue, a soldering iron and scissors you will need to for 15 min to produce the light.
Contemporary polished surface of the dining table, coffee table or bedside tables podtsvetochniki a pity to hide under a tablecloth or other nakryvki. Good Housewives prefer to use a small beautiful napkin-holders, who are also themselves serve as an additional decoration, in addition to the protective functions.
For those who are on their farmstead breeds poultry, I recommend to make avtopoilki: simple in design, reliable in operation (in this case provides good stability even at “unceremoniously” handling it by the birds).
What kind of “aerobatics” not started accidentally discharged the cargo to be hoisted, it will reliably keep a simple but effective lifting device, manufactured by the Leningrad pioneer D. Potemkin. The device consists of a loop sling and guide the rifle with a basic platform and hook. A sling is passed between the replaceable pin of the rifle, grabs the goods at the place of the intended center of gravity and jumped on the hook.
No one is surprised that for drilling different holes require different tools. The bit set can not do, does not matter. The trouble is that the tool change takes a lot of precious minutes. How to avoid this! In various companies are innovators in different ways solve this problem. There was, for example, drill bits with a stepped diameter, one such tool allows you to drill small and large holes. And where this range should be really very great work on the turret with permanently fixed at their range of drills.
For grinding of surfaces of metal parts to a mirror Shine created a lot of mechanical devices. However, most of them are designed for processing flat surface, in an extreme case, with only a small curvature. And how to be with different matrices and punches, press forms — after all, they must be treated as carefully!
The normal brush is good for painting only flat surfaces. That’s why innovators design for complex works of a special brush. The original, with the unusual instrument, outwardly, no resemblance to the brush, though intended to perform it functions. He developed in the Institute Kazorgtechstroy and is designed for painting pipes oil compositions.
Among smokers at all times, alone stood out, those who prefer tubes. This is due not only to the dubious assertion that the pipe is less harmful, but solemnity in the ritual of tamping it with tobacco and the process of Smoking Many of its supporters is captivating, and yet that with all the variety of pipe TOBACCOS they have one thing in common – most of them are scented and smell good.