Often, after the hole is drilled,further or a clean, slightly to expand or to make a slightly oval shape. This work can be facilitated steel Bender, automating it with a drill in a cartridge which is inserted a circular, semicircular or even triangular needle file or similar file section. V. SIZIKOV
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For a uniform bending of the tubing, especially thin-walled, usually filled with sand. But it may happen that at the right moment it will not be on hand. In this case, it is possible to...
A SOLDERING IRON WITH A SYRINGE.
Anyone, even a well-equipped modern machine shop to do probably without soldering. And no matter how they fought for the engineering is still in front of us (according to the definition...
