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
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.
Bench drilling machines (such as NA-10, NA-12), as a rule, is at any station of young technicians in every school workshop. There are some in our school (I work as a teacher). And once a pupil of the 6th class when drilling holes in small parts dropped it in a vise. Began to turn them over to get the detail, didn’t hold, and the grip fell to the floor. Only by sheer luck that this incident was closed with a foot injury, although the consequences for the child could be much more serious. I think that such incidents are not uncommon: in school workshops and at the premises of technical circles often seen on the floor next to astelinastelin press dents from the clutches of the fallen.
It would seem that there is nothing easier, than to hammer in a nail. This can make any boy, not to mention women. Why is it even the men but this seemingly simple operation sometimes does not go smoothly: the nail is hammered badly and suddenly bent; or the hammer blow falls not on the nail head, and a finger!
The furnace is designed for metals with suitable melting temperature in a volume of 10 cm3. It is an electrical transformer, the secondary winding ends of which are closed with a conductive vessel in which melting occurs. Oven can be used for artistic casting, in jewelry, for casting billets, alloys.
To design present a universal (I believe) bench is a necessary desktop DIY I came across several years of studying technical creativity. It was designed based on their needs. But I think about the same requirements to such equipment his Studio have most other home handymen. Workbench foldable and small in size. However, due to the original pressure of the knot on it to handle you can pin a fairly large parts and products, installing them in a vertical plane, and at multiple fixed angles.
In the conditions of a home workshop without special tools and fixtures can be performed, perhaps, only the so-called “collective” keyway: when impaled on the shaft gear or pulley is drilled by the drill joint hole centered on the circle stitching. Then in this hole is inserted a cylindrical key. But such a connection of the parts securely — no wonder because it is not in any Guest.
Today’s “unobtrusive service”, which have to apply for the small problems of household systems, effectively “bite”. Even the call an electrician, technician or plumber to diagnose, not to mention the simple elimination of minor faults, is quite expensive.
During the construction of the models is often necessary to apply a veneer of varying thickness. Typically the desired thickness is obtained by grinding with fungus with glued on end cloth, is inserted in the Chuck of the drilling machine. This method is most affordable, but it has several drawbacks: poor performance, inability to process veneer with thickness less than 0.5 mm, because of the rotation of the fungus veneer escapes from the hands and broken, and finally, the main drawback is the large air pollution wood dust. To handle more than three or four plates is not possible even a respirator.
Advantages of adhesive bonding are well known. So to advertise no need. Amateur masters have long been actively using the method of bonding parts in their designs.