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”).
THE KEY IS “HOW MUCH”?
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.
In Amateur practice it is often necessary to assemble temporary circuits and soldering details “stuck” (as a welder). While in one hand the wizard tweezers, soldering iron in the other; item, to which it is necessary to solder the other element or conductor, “spinning” on the table: — need a “third hand”. Proposals on this subject abound in scientific and popular technical journals. For example, in the form of two clamps mounted on a tripod, or gum, and then just a small grip.
It is intended for the instant fixing of parts of circular cross-section axes, rods, rollers and the like. It can be used when drilling the end holes, milling flats, slots, or splines. The clip comes to the rescue and in the metal machining as it can be conveniently mounted in a vise. Another advantage of the device — a reliable fixation of the parts during processing.
The functions of the boring machine can run, and milling. Of course, at a lower level of precision, but for many works this is not essential. For such conversion we recommend you to use developed in Valuyskiy young technicians universal boring head: it impresses manufacturability and simplicity.
Versatility — the main advantage I have developed multi-operational machine for working wood. Him “on the shoulder” turning, pugovka, cutting the material, drilling, milling, tenoning operations. In the end, it is possible to sharpen a tool or make it into a joiner’s workbench.
