|CLICK HERE FOR INDEX PAGE
|BASIC ACCESSORIES AND DRILL BITS
|V. Ryan © 2006 - 2023
Accessories such as rill stands can be used to clamp a drill in position so that it can be used like a machine drill. Stands such as these are fine for light work but for heavier work it is recommended that a Machine Drill / Bench Drill is used. A drill stand is normally used when storage space is limited. However, if there is enough bench top room buy a bench drill as it is safer and it can be used for a wider variety of drilling. Drill stands are usually supplied without guards or machine vices. This inevitably means that they are not as safe.
|PHOTO-REALISTIC IMAGE OF A TYPICAL DRILL STAND
COMMON DRILL BITS
Good quality drill bits are manufactured from High Speed Steel (HSS). This type of steel keeps its sharp edge for along time and is capable of cutting through extremely resistant materials. Do not buy cheap carbon steel bits as they are a false economy. They will wear quickly an will not cut through resistant materials
Twist drills come
a range of sizes. the more common sets of twist drill range from 1mm to
10mm in diameter. When drilling the larger diameters it is wise to drill
a smaller ‘pilot’ hole first and then increase the diameter of the hole
by drilling with a larger size.
Masonry bits are very similar to normal twist drills. However, tip is usually made from carbide steel. This is extremely tough and keeps its sharp edge even when drilling stone and brick. From time to time the tip will need grinding in order to re-sharpen the cutting edge.
Hole Saws are
used to drill large diameter holes, usually through thin wood boards.
When drilling it is important to withdraw the saw/drill regularly to
allow all the waste wood/chippings to escape from the hole. If this is
not done the saw tends to ‘jam’. This can be dangerous.
Flat Bits are use to drill fairly large holes in wood boards and sections. They can be purchased in a range of sizes.
|A Plug Cutter is useful for cutting reasonably large holes through wood based materials. The wood collects inside the cylinder and can be removed quite easily, giving a disc of material.
A Forsner Bit is used to cut ‘blind’ holes in wood based materials. A blind hole is one that does not go all the way through the material being drilled.