“From work saw burn until white!” — wrote Vladimir Mayakovsky in his poem “Whom to be?” Meanwhile, heat the cutting tool in the first place means that he is dull. In this case, the joiner, as of old, takes padpilot (triangular file — in modern terminology) and manually sharpening the teeth of a handsaw. Much hard work and unproductive work! But maybe, and this operation can be mechanized? There are also sharpening machines for milling cutters, disks of circular saws… However, here’s a review on the machine, developed by ninth-graders of high school № 28 of Ust-Kamenogorsk city under the leadership of teacher A. A. Boytsov: “bench grinder will find wide application not only in school workshops, but in the joiner shops of the construction companies and carpentry teams on any construction site. The machine is easy to manufacture and allows you to sharpen the various woodworking tools — hand saws, the blade semi-circular and chain saws”.
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Many imported models of the industrial housing calls does not stop the flight of thought of an Amateur designer, but on the contrary. To install the house call that will surprise and delight guests – a worthy reason to continue playing. The obvious advantage the home worker before the foreign industry is the knowledge of local cultural traditions, so when I decided to develop an idea, character, ringing the bell, it didn’t take much time.
We have long been accustomed to the prefix “electro” in modern musical terminology. Appeared such names as electric guitar, electro, and even the ensemble of electronic musical instruments. Many of the tools have become more rich shades of sound, when a duet with them stands electronics. Bypassing it is only people’s tools. Plays a role, apparently, the fear to violate the purity of the already established sounds. But this is not so. Even such a simple instrument like a balalaika, will be able to gain more power, become a true soloist of the orchestra of folk instruments, if you supply the pickups. Today’s publication is devoted to one of the variants of the “electrification” of the balalaika.
The knives or Strug indispensable when machining curved surfaces. To make them simply — it will only have an old file with a length of about 200 mm. In the first file you need to termoobrabotki. Soshlifovat previously a small area, gradually heat the file evenly along its length until, while in ground place appears red-brown film of oxides, after which the file is cooled in water or air. This heat treatment will reduce the brittleness of steel, while maintaining the hardness necessary for cutting edge on plow.
“Battleship”… Who do not know this simple yet exciting game! Polished by many generations of pupils, it reached perfection and it has only one drawback — “shots” of the battle are easily detected in the classroom, as opponents and then whisper: “D4!” — “Choke!” “E5!” — “Hit!”… If the teacher hears the losers are both the enemy.
Shelf I made for my bathroom, not much different from many similar, but due to some features of its design creates the impression that the shelves in the bathroom as it does not exist. The secret is that the size of the mirrored doors is slightly larger than the dimensions of the locker.
Cut the correct glass circle is not so simple. Usually on the sheet steklografom put the outline of future disk, and then not spend a dozen tangents. The resulting polyhedron is brought to the circle by a fine-grained whetstone. It is much easier to make this work with a homemade tool. Its basis is the caliper. The inner leg is clipped and hard solder attach pad. After Stripping through her and the leg is drilled through hole. In the resulting plug is inserted carbide roller from a standard glass cutter. As the axis is used, the bolt of suitable diameter. On the anchor leg of the caliper push the plastic mold. And the last thing you need to do is the metal disc Ø 30 mm with naturalnym in its center a recess with a glued to it with rubber gasket.
The principle of operation of this device for cutting, or rather, cutting out of teeth on the blades for the hacksaw is simple. Its main part is a wheel with a cage, fortified it with four screws. On the surface of the cage is cut two or three strands of outer thread with a pitch, height and profile of the future teeth of a saw. Extreme thread thread partly removed with a cutter, or a chisel and chopped off the right angle: the end will perform the role of a punch. To increase the impact force to the flywheel attached two opposed.
In the journal “modelist-Konstruktor” No. 4 for 2008 have already been published, one of my small bench drill press. Now offers readers a different, in my opinion, a more versatile and interesting design. Meanwhile, this upright drilling machines single-spindle work hard also not hard to make yourself, having practical skills in machining metal parts and metal build, and some of the most complex parts can be ordered as a master-technician.