Hand drills are rarely used. They have many advantages over electrical appliances. In view of the widespread use of electric drills, it is hard to imagine, that just a few years ago drilling was only done by hand. However, the devices used have not completely disappeared. For good reason, because no electrical connection is required for hand drilling, no cable disturbs, there is hardly any noise, and drilling can be done with more feeling. In individual cases, with. B. when drilling a 35mm hole in a beam, an expensive electric machine would be required. The better solution: the inexpensive hand drill.
Hand drill and E-device alternate
Hand-operated drills can be of great service as a second device. For example, when making furniture, different drill sizes are required in alternation, one can hand- and equip the electric machine with the appropriate drills, thus saving the constant need to replace the drills.
Hand-operated machines
The simplest form of hand drill is the drill winch. As with a crankshaft, the force of the hand is transmitted to the axis and, as an extension, to the drill. Through the 1:1-Translation creates a very high torque, that is hardly provided by an electrical machine. An optimal frictional connection to the drill is possible thanks to an inserted square cone holder. Higher drill revolutions can be achieved with gear drills. You can choose between two gear ratios by switching or repositioning the crank. With machines of this type, which develop a relatively high torque, With the help of the appropriate bits, screws can also be screwed in or dowel holes can be drilled in sand-lime brick with carbide drills. All drills with a cylindrical shaft up to 10 mm diameter fit into the three-jaw chuck. With these possible uses, the machine is a battery-free and therefore environmentally friendly alternative to modern cordless screwdrivers.
The possible uses for muscle-powered drills, however, is due to the low drill speed, that they achieve, limited. In woodworking in particular, it is important to have clean drill hole edges, for which the high speeds of electric drills are required.
For screws and nuts
Who works a lot with large threaded screws, you can put together a practical screwdriver for wheel nuts, for example, from socket wrenches or sockets and a drill jack. Nut extensions fit into the jaw chuck of the drill jack.
Safety even when doing handicrafts
Electric drills can be left to children for their handicrafts, because even cordless screwdrivers are not always mastered by the young do-it-yourselfers. However, there is still a risk of injury from sharp drills during manual operation.