THE TABLE… ON THE WALL

TABLE... ON THE WALLDesk need and first grade, and academician, not to mention students, engineers, programmers and many other “sedentary” professions. Those that are industrially produced, as a rule, slightly differ from each other only as a decorative finish; the design is almost completely similar. But today the secret to buy in stores is extremely difficult. We offer readers of self-made Desk for publication in Bulgarian journal “Guide yourself.”

TIMER WITH FOLDING WINGS

TIMER WITH FOLDABLE CREELTimemay any flight models are, in fact, consists of two clearly differentiated stages. The first — motor climb. The main objective here is any means for a strictly limited time for a given mass model and power plant to raise timesnow for possible high altitude and to accelerate to maximum speed, allowing for a transitional land use kinetic energy for an extra lift transition point in the planning mode. The most logical way to achieve these requirements is the reduction of aerodynamic drag of the model in take-off configuration.

AT THE DOOR BARKS… A TAPE RECORDER

AT THE DOOR BARKS... RECORDERIn these troubled and difficult time when the crime situation every year more complicated, the important importance of watchdog and signaling device that protects property from encroachment by criminal elements. Among these developments, I have designed instrument, to collect which can anyone, even a novice radio Amateur. Using as actuator recorder of any type, on a looped tape which recorded tigrama barking dog, it simulates presence in the building watchdog. And the electronics triggering happens at the moment of approach or touch of a human hand to the castle.

SCREW – ON COPIER

SCREW - CAM

Fixture is used for manufacturing propellers boat on lathes Тb-4 and TV-7. Using the tool it is possible to produce propellers of aluminum alloy (D16T), brass and plastics. Moreover, the production of screw blanks of alloy D16T takes up to 10 minutes, and made of brass — up to 40 minutes. The diameter of the screws up to 50 mm Number of blades — 3. You can do two – and four-bladed screws, but this requires modification of the spindle and tracer. The fixture consists of a housing, which is attached to the copier. In case the spindle is inserted, it is secured to the arm and disc. In a lathe Chuck clamped to the mill.