Advantages of welding machines DC before they “perimentally brothers” is well known. It’s mild arc, and the ability to connect thin-walled parts, and less spatter, and the lack of nepreverjenih sites. Even the annoying (and, as it turned out, bad acting people) cod is not. And all because there is no major inherent to the welding apparatus of the alternating current feature — intermittent arcing at the overflow of the sinusoid of the supply voltage through zero (Fig.1).
I recommend readers of the magazine is easy to count, easy to manufacture and very reliable electric soldering iron. At my house, for example, these range from “krohotulki” for work with microelectronics to powerful “ax” with which to patch a leaky metal tanks, repairing wells, filters and other large items. Moreover, the heating element of each electrical device is… the appropriate power resistor (type PE or PEV), powered by household outlet voltage is 220 V. the resistance, if they cannot be avoided, reactive, precise, capacitive, allowing to solve very complex electrical problem with the minimum dimensions of the devices.
Usually designers avoid threaded joints if at the conventional “nut” less than two to three threads. Method shown in figure, allows you to make a threaded connection more reliable. However, to make a hood, will have to make a simple punch and die.
Found another use for plastic bottles of carbonated drinks. Should trim it as shown in the figure, and turns out to be convenient scoop for bulk products – flour, sugar or cereals.
Any of the compass there is a limit in describing them circles. However, a circle of the desired radius can be obtained using… line. Just drill in it a large number of holes, then the first of them to insert the pin-axis and the other, stepping back to the desired distance, pencil. The circle will Read more…
It is not an exaggeration: the basis of all of these designs really stepladder. However, originally arranged, which allows to obtain the transformation. Like all sliding ladders, it consists of separate halves having a top swivel. But that’s where the similarity ends. Next come the features that make the ladder universal fit to build the structures that are needed. In particular, for children’s room or for the garden.
One of the inconveniences in the design of many cars is that the interior light goes out immediately when closing the doors. There are, however, a special device to delay the power light on 5-15 that the driver had time to explore the dashboard controls and to insert the ignition key. But these developments are usually complex and expensive. And reliability often leaves much to be desired.
Somehow, helping Ivan Andreyevich, the old man at seventy plus, to refurbish the ladder in the cellar, I noticed how difficult it is for him to come down, foot on the crossbar was shaking without any support under the heel and toe. Especially when in the hands was a load of potatoes, and especially bag. “There would be steps, — he was justified, noting my sympathetic glance, and then like a chicken on the roost.”
Motorists asked to get a shallow pit that allows you to perform repair of machines sitting. Energy and materials it takes much less than in the arrangement of any ie “polnost governmental” counterparts. And work convenient. Is a mini-pit in two parts: a sump with a slanted end (it falls under the car) and depth, equipped with mortise seat. Wall recommend to impose with a brick. If there is roofing iron, it is quite possible to do the lining and out of it in the form of a welded box construction. Not the best option (but more affordable) is to dig a wooden stand with a subsequent interior wall boards, plywood or plastic. But the bottom (if there is no soil water) can be left in excavation without any coverage.
