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).
For fixation of the drill in the Chuck, drill a lateral hole for the screw M2. And to impose the Chuck on the motor shaft, to a depth of 10 mm drill hole Ø 3.9 mm, and then adjusted his scan up to 4 mm. the Shaft is lightly sanded with fine emery paper and tightly stick cartridge.
To make the drill comfortable to hold in hand, made four wooden lining size 65X15X12 mm. On the engine block they pull together two steel M3 screws.
Design of drill:
1 — switch, 2 — bracket, 3 — motor, WCT-1, 4 — pad, 5 cartridge.
Bracket for mounting of push-button switch is made of strips of soft sheet aluminum or latocki 30 mm wide and 2 mm thick. Beveled portion of the strip bent at an angle of approximately 105° and it then make a hole for mounting the push-button switch.
Next, drilled hole Ø 3.2 mm and placing wooden plates, the bracket is mounted on the engine, and the remaining end is bent.
Skewer the cartridge, grip the drill and include the drill. If the cartridge is visibly hit, he just needs a little touch up with a small hammer until the drill won’t spin without noticeable beats.
Yuri PAKHOMOV
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