Technical

  The Alpha ZENTRO Masonry range boasts dynamic drilling ability with secondary cutters protecting the drill bit in the event of reinforcement collision. The one-piece, solid carbide tip and patented reinforcing chamfering ensure low vibration and optimum drilling performance when drilling into reinforcing steel. The ZENTRO will drill up to 50% more holes for anchor fixings than other rotary hammer drill bits. Download your brochure here           …

HOW DO I START DRILLING A HOLE IN GLASS OR TILES? The simplest way to start a hole is prior to drilling the tile or glass. Drill a hole with the drill bit through a piece of timber, plastic or even cardboard. Place this ‘template’ over your target spot and start drilling, this will keep your drill centredand will stop it from moving. With a diamond core drill start of on an angle and then move the drill up to vertical, if you start vertically it will “walk” and mark the g …

This easy to use chart allows you to directly compare Metric, Fraction, Gauge and Inch conversions from 0.3mm through to 40.8mmm. Click on the image to download

The flute form, web thickness and helix angle of the standard drill are suitable for most materials producing semi-continuous chips.  Drilling sizes of 13mm and smaller in soft materials which produce continuous chips, e.g. copper, aluminium. A bright finish fast helix drill may be required to move the swarf more effectively. Conversely on materials producing discontinuous chips like brass, gunmetal and some plastics, a slow spiral is preferable. For effective drilling, the rigidity of …

TAP DRILL SIZE On tough materials like stainless steel we recommend you take advantage of the extra allowance.It is especially important in deep holes of 2 times diameters and greater. In the thread charts that follow the correct tapping size is given in the information. We also give the alternative maximum size, as with good modern drills the drilled hole can be small.  Here is a Tapping Chart you can use for reference:  (Click to open and download the chart) LUBRICANTS …