Which types of drill bits and chisels?
Drill bits are cutting accessories without which a drill could not fulfil its intended functions. It is thanks to them that we can drill holes in such materials as, for example, concrete, brick or stone. Drill bits and other accessories for power tools are listed and described in rawlplug.com – here, it is worth paying attention to their wide variety. It is the work to be done which determines which drill bit type to select.
Twist drill bits are particularly well suited for drilling cylindrical holes. Made of high-speed or stainless steel, or of cemented carbides, they enable drilling holes with highly differentiated dimensions. The diameters of twist drill bits have a considerable range - from 0.1 mm up to 100 mm, so we sould have no problems with the selection of the most appropriate tool. Failing this, if we plan to cut holes of very large diameters, we can use trepans (trepan drill bits), which are also called crown drill bits. They look different - just like pipes with blades, spaced on the working edge circumference. A hole is drilled by cutting the material only on its circumference.
The selection of an appropriate drill bit type depends, however, not only on the size of the holes which we are going to make, but also on the type of material in which the holes are to be drilled. Flat drills are used for wood cutting. Their working part is flattened and has two straight cutting edges. Twist drill bits are also used for wood cutting, i.e. bits with a helix-shaped core and a chip groove, enabling chips to be removed from the drilled hole.
Chisels are useful accessories as well. Flat chisels, with a broad cutting surface, are most commonly used, as well as point chisels, which allow for fast work on a hard surface, such as concrete. A grooving chisel may be useful under certain circumstances (it makes grooves without cutting the base), as well as a channel chisel or a bush hammer, well adapted to level concrete surfaces.
What blades and adapters are to be selected?
Tips are accessories which are mounted on a screw gun. In this way, the tool is adapted to particular types of screws/bolts. The tips have milled heads to match screws of a definite type. It is beneficial to choose bilateral tips, as we then have two heads in one accessory. Tips are mounted on screw guns by means of adapters. They most often have an internal magnet which ensures tip stability. They may also have a locking mechanism to prevent its falling out.
Which cutting and abrasive accessories are useful to have?
Out of the cutting accessories, blades for jig-saws are useful (they can be used to cut wood, aluminium or even steel), as well as saw blades for circular sawing machines - those with cemented carbide teeth can be used for cutting wood with nails, filings or other metal elements.
The abrasive accessories include, first of all, grinding wheels. Disk-type grinding wheels, grinding pins, coating or corundum grinding wheels - regardless of their type, are intended for surface grinding and smoothing. They are made of a binder with abrasive grains incorporated into its structure.
Grinding disks are accessories of a different type. They are made of wool or felt and fixed to drills or angular grinders. They are particularly suitable for polishing metal and lacquer-coated surfaces.