Propano-butane mixture, which is filled in cylinders for household gas stoves, in optimal conditions, burns in air with a flame temperature up to 1200 °C. It is sufficient to work with “hard” (sredneivkino) alloys: copper-zinc (brass), silver. But to get a flame, the burner must provide good mixing of gas with air, that is, feeding them at a specific ratio — no more and no less! For easy work with small parts torch should be fine, but at the same time steady and fairly hot.
BURNER FOR GAS-FLAME BRAZING
In the early XIX century the French scientist Augustin Jean Fresnel has created an unusual lens, which are not brushed solid piece of glass with a spherical surface, and a set of individual adjacent to each other concentric rings of small thickness, having a cross-sectional shape of the prisms of the special profile. This he achieved small thickness and light weight lenses. Fresnel lens in the past, have found application mainly in large lighting fixtures type marine beacons and today is actively used, for example, in projectors, in viewfinders of cameras and flashbulbs. Small thickness of such a lens allows you to release them in the form of plastic transparent rulers bookmarks, which are usually used by people with low vision read small text.
The ventilation needs of many suburban buildings. Without it, mold in houses and sheds, get wet cellars and basements, and only use luftblasen, where there is no fan, to put it mildly, uncomfortable.
Sometimes the house master when performing any repair or maintenance work is to explore the dark, and even hard-to-reach place that will not push a normal portable lamp. In this case, helps out a small candle and even ordinary match, but often the conditions do not allow the use of open flames: fire or by circumstances, or because of the possibility to ruin something that needs to be seen.
The heating battery is a necessary part of every apartment. Cast iron “bunching” of the old production and even modern variations are far from aesthetic perfection. To eliminate this drawback of the interior proposed a simple and practical design – Cabinet-screen. The front panel it has a sliding part to which the rear attached to the frame of pine slats for drying clothes. On top of the cabinets can be decorative vases and pots of heat-loving plants.
This ornamentation on almost every bed, but also will create comfort in the room, and so sleeping under the canopy – more and more quiet, since summer will protect from annoying insects such as flies or mosquitoes. Cloth frame on four turned wooden poles looks very elegant, and the manufacture is so simple that anyone can DIY. And to install a canopy can be on any existing bed, as his design not connected with her: she is Autonomous, as is easily seen by looking at the photographs.
Skilled craftsmen-lovers will take great pleasure in having made this table with folding additional counter tops. We are talking about the French magazine “System D” model in “Royal” style, which is characterized by simple lines, with curved legs and the absence of any invoices or carved decorations. Such a table is a real treasure for those who love beautiful furniture.
An interesting new trend observed in modern suburban areas: they are less likely to be perceived as a place of garden chores, and, increasingly, as a place of serene rest. Hence, all the more changing the appearance of a country manor court, if berry bushes and fruit trees are still losing out, the beds in many cases are inferior to their area of smooth green lawns and beautifully equipped recreation areas with pavilions, miniature decorative pond, stationary grill and unprecedented barbecue.
Creative search is possible in all areas, and agriculture is no exception. For example, at the individual plot of each can experiment as much as you want at your pleasure. So I went to the dacha gardening. So I want to share some experience of experimental cultivation of potatoes — without the use of any mechanization and, moreover, without plowing the land.
What the shelf life is not I had to do for the home and garden. After all, not every purchase can fit into the interior of the apartment: the shape does not like it, the size is not suitable, then the place does not fit. And with regard to beautiful hand-carved shelves, the price may not be acceptable for families with low incomes. So we have to do on their own to be able to meet all the requirements of the owner.