1/11/2024 0 Comments Drill bits for stainless steel![]() Cobalt M42 Drill Bit Set This is a set of 14 BOSCH CO14B 14 Pc. Use them for any job from drilling holes in metal to cutting wood or plastic. The larger the drill bit size the faster the heat build up will be so this time should be reduced for larger drill bit sizes. Best Budget: XLCMSY Cobalt Drill Bit Set, M35 HSS Metric Straight Shank Twist Drill Heat Resistant Metal Drill Bits Stainless steel, cast iron and wood. As Allfasteners say in their article ‘ Drilling Stainless Steel the Right Way ’drill the material on short bursts. We would recommend you do not drill for longer that 30 seconds without taking a break. A specially sharpened 130 tip and progressive geometry in the diameter of. ![]() It is important therefore to stop drilling from time to time to allow the drill bit to cool down. A DIN338 HSS drill bit for stainless steel. Take a break… Even with a slow speed, reduced pressure and good lubrication heat build up is inevitable when drilling stainless. Our advice would be to use one rather than not using any. There are many types of drilling lubricant available including oils, sprays and pastes. A good drilling Lubricantwill reduce the friction and assist in controlling temperature build up. However many will drill metal without any form of lubrication. Lubricant It may seem obvious to some that when two metal surfaces are moving against each other under pressure that lubrication is necessary. ![]() Once achieved do not exceed required pressure. The best approach is to start off with a light pressure increasing slowly until you achieve nice spiral cuts coming from the cutting face. Excessive pressure will have the same effect as drilling at a high speed, it will cause unwanted heat build up. Pressure Another misconception is that maximum pressure will result in maximum results. Our advice would be to drill at as slow a speed as your power drill will allow. There are many drill bit speed chartsavailable quoting revolutions per minute, in reality not too many people will be able to relate to these figures. Once the stainless steel is work hardened it will become very difficult to drill. Stainless steel is not the hardest of metals in its natural form, however as pointed out by Chip Lawson in his piece ‘ Know How: Drilling Stainless Steel’, stainless steel will ‘work harden’ fairly quickly when heated, and one sure way to increase heat is to drill fast. This is a big mistake, particularly when drilling stainless steel. Speed Many people have a tendency to drill at as high a speed as possible assuming that the faster the drill bit is turning the quicker it will drill the hole. Cobalt drill bits are considered the best option due to their ability to withstand the high temperatures created when drilling harder metals. Drill bit When drilling into stainless steel the choice of drill bit will ultimately determine how successful you will be. However it can be done easily and efficiently if you follow some simple steps and consider the following questions which all amount to keeping the drilling surface temperature as low as possible. How to drill into stainless steel is a commonly asked question and for many drilling stainless steel can be a daunting task.
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