![]() This will improve the performance of the drill bit. This will stop the drill bit 'skating' around the surface of the Stainless Steel so that the hole is drilled in the correct place and you don't scratch the surface of the Stainless Steel.īefore you pull the trigger on the drill, make contact with the surface of the Stainless Steel and apply gentle pressure. Use a center punch to mark the center of your hole.If you apply too much pressure, the Stainless Steel may turn black and go very hard which will make future drilling quite difficult. Too much pressure will cause the drill bit to glow red and will permanently damage the drill bit. Drill slowly allowing the drill bit to do the workĮnough pressure will mean the drill bit doesn't 'skip' over the surface of the material.This type of hole cutter is not suitable for cutting Stainless Steel. They are easily recognizable in your local DIY store by their ability to mount a complete set of cutters on the same arbor at the same time. The 'thin, bendy, springy' type of hole saw which has cutters that do not form a complete circle is not suitable for cutting Stainless Steel. This type of hole saw can be used to cut circular holes in thin Stainless Steel sheets, but you must adhere to the 'Techniques for Drilling Stainless Steel'. A hole saw will not remove the bulk of the material - it only cuts a line around the perimeter of the hole. The arbor will usually take a range of saw sizes from 20mm to 80mm.Ī pilot drill which is attached to the arbor will cut ahead of the main saw and keep it centered and cutting in line. ![]() The complete hole saw will pass right through the hole they have made. The leading edge of a hole saw has a section of a sawtooth profile which will cut a hole through many kinds of material. They are manufactured from substantial steel. They are made from a hollow cylinder with one end closed and with fittings for an attachment to a common arbor. Professional hole saws can be used for very large holes. ![]() These are even harder than HSS drill bits and are designed to drill hard metals including Stainless Steel. Look for drill bits which state 'Titanium Aluminium Nitrade' on the packaging. When visiting your local DIY store, do not be confused with cheap painted drill bits that are not suitable for drilling Stainless Steel. If you want to invest in a drill bit that will drill a lot of holes, it may be worth investing in a HSS bit that is coated in Titanium Aluminium Nitrade. What type of drill bit for stainless steel should I use? For more holes, a Cobalt drill bit is recommended.
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