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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CUTS WITHOUT MARKING
The fixture is designed without a preliminary marking to make notches in the hubs of the propeller blades. The base is cut out or milled from steel or aluminum. Margins of 10 mm...
UNNECESSARY TO SEAL
If the angular groove in the part requires the processing of a triangular file, but only one side with a notch (nearby to not participate in it), tape it temporarily any adhesive tape...
