Even the person far from technicians, often have to Unscrew-screw the screws, bolts, nuts (hardware — so often referred to in abbreviated form these metal products) are designed for this tool — a wrench. Each key caused the size of its working parts, simply — throat. But the corresponding value is the size of the key — referred to in the technical handbooks by the letter S (the distance between the opposite parallel faces on a nut, bolt head or screw), is not listed on any of the fasteners. No, as a rule, these data and the attached to any technology operating instructions and repair even in the notation and in the drawings, although other information about fasteners in them abound: specify thread size, and her step sometimes the length and even the type of heat treatment, often tightening torque. But most of these data — structural, and they need to manufacture parts. When the adjustment, repair or Assembly work of the above settings thread, except the last one are not in demand. For a mechanic it is much more important to know what size front axle you need a key for the head of one or the other of the screw or bolt and nut (or, as professionals say, “the key is how much”).
Pump chamber of a Bicycle wheel, for example after repair or tire, the operation is quite tedious because of the low performance of the supplied pump. Besides, there are pumps, hose attach at the end — then the job is also heavy. Because the pump has to keep on weight, creating pressure with one hand and the other opposing him, that is producing double the work.
You never tried to bend metal sections “area” or “channel”? If you had, then you probably know how hard it is, especially if the profile is lengthy. Simple drawing mill, made by me, allows you to run a variety of shaped metal profiles with a thickness up to one millimeter in almost any length. In the case are plastic and metals 3 steel grades and the stainless steel, aluminum alloys and brass.
In the manufacture of printed circuit boards have to drill a lot of holes. This is best done on a drill press. But many radio Amateurs it is? But it is not so difficult to do.
In the manufacture of personal watercraft, hidrocaribe and other small-tonnage vessels to protect the surface from moisture and make the case the mechanical strength is widely used fiberglass. However, faced with the complexity of the processing surfaces having a large area (an average of about 8 m2). In this rational use of mechanized tools (electric drill, grinding machine, type “Electra” etc.).
Heat the water to 50-60° can setting developed by the participants NTTM special design Bureau No. 1 of the Institute of power engineering Institute imeni G. M. Krzhizhanovskogo. Interestingly, there is no furnace or heaters. Replaces them… the sun. This setup is especially desirable in those areas of the country where local fuel is missing, and the cost of imported quite high.
Yes, on any lathe with a hollow spindle it is possible navit spring diameter up to 12 mm from the wire thickness of 0.1 to 2 mm. More than that — of any length. All this is provided by a simple device introduced by NTTM participants at the Leningrad order of the red banner of Labour plant of lifting and transportation equipment named after S. M. Kirov. Unlike similar devices, there’s a knot in the wire feeding thanks to the ingenious solution available for self-production in rural workshops.
In the household of great assistance can have a miniature electric drill. Easy to make on the basis of the motor WCT-1, is designed for EPA of the store and radios (see figure). The cartridge is made of steel round or hex bar. In the center of the drill a through hole Ø1—2 mm (depending on drill diameter).
At first, like most beginning hams, mounting holes in printed circuit boards, I drilled using a universal tool — drill. But as it turned out, to produce a small hole (diameter less than 3 mm) and high precision hand drill — helper bad. Broke a lot of drills and spoil a few boards came to the conclusion that technology needs to be changed and without a drill rig I can not do. When searching the shops and markets and buy for my old drill never found, decided to make a small tabletop drill press, the benefit of some of the mechanisms and materials for it were available, primarily the motor and the cartridge. Before commencing, determine what machine I need. There are two most common of their design. The first one is used to supply rotary tool to fixed on the table the workpiece. The second is when the table together with the workpiece is fed towards the cutting tool.
The construction of the ellipses associated with certain difficulties, that’s why when drawing the axonometric images this process takes the lion’s share of time. I invented ellipsograph allows you to quickly draw ellipses of different sizes and with any ratio of the major and minor semi-axes. If necessary, the tool can be used as a regular compass to draw circles.