A drill: is a machine tool designed to drill holes using drills.

Drills and reamers are used to obtain holes of more precise dimensions. Countersinks, etc. are used for countersinking.

Most often, tools are clamped into the drill using chucks of various types and sizes, the most common is a gear chuck up to a diameter of 13 mm. Larger diameter drills are clamped directly into the drill spindle using a Morse taper. Originally, the drills were powered by hand, they were hand tools. Todays drills are usually driven by electric motors. To obtain different speeds, the drills are equipped with gearboxes and electronic speed preselection.

The simplest tools for manual drilling of holes are classic heaters. Other tools for drilling holes are also spinning wheels. There are also hand drills equipped with a drill thread, as well as mechanical hand drills driven by a crank by means of a gear transmission.

Hand-held portable electric drills powered by a single-phase electric motor are often equipped with a «hammer», which is a vibrating mechanism that facilitates the destruction of masonry when drilling into concrete and other building materials. (Source wikipedia)

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action index:
00:01 Introduction of the Zbrojovka hand drill
00:36 Disassembly of parts
06:26 Removal of paint with sodium hydroxide
08:19 Using a wire wheel, I cleaned up the remnants of rust and paint
09:07 With the help of files, I cleaned the scratches and depressions in the material
10:07 Bonding with paper tape before spraying
10:40 Primer spray
10:58 Application of spray sealant — pore filler
12:46 I polished the abraded parts that will not come off with a cloth wheel and abrasive paste
13:13 I chose the original black as the top color and used a two-component epoxy paint for that.
14:26 I decided to make new old hands. I used beech wood
18:28 Wood shavings work just like fine sandpaper.
20:00 The table oil was suitable for the surface of the hands
21:50 Thread the lubrication holes
23:02 The chuck still includes springs, for which I used an old ballpoint pen
23:54 And we can assemble
27:04 Test
27:20 Thanks in particular to my Patreon partners
27:29 Comparison before and after renovation

Thank you for the 28:31 minutes of your time. Yours, Radek

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