With both the vast array of metals and the growing number of drill bit options it is understandable how choice of drill bit can be confusing. There are many different drill bit options for drilling metal and they include:

Before you start drilling any metal preparation is key and it is worth taking the time to complete the following checklist.

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CUT-IT is a metal cutting paste which contains extreme pressure additives and has been tested and certified by Sub Fluid Services.

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In drilling metal it is absolutely vital to wear the appropriate level of protection for the job you are doing. At the very least you should wear suitable eye protection in form of safety glasses.

Guhring thread mills are manufactured from Guhring carbide rod, produced by our facility in Berlin, Germany for Guhring's carbide tooling.

Those of you who require more technical information such as drilling speeds or drill bit sizes can navigate easily to these pages.

For most non workshop applications a powered hand drill will be used. It is recommended that a power drill with adjustable speed be used as a slower speed is often required for drilling harder metals.

If drilling harder metals on a regular basis it may be worth investing in a good quality drilling lubricant which has been tested and is known to contain extreme pressure additives.

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2018614 — The key difference between carbide and high speed steel is that the carbide is extremely hard and abrasion resistant and therfore, the tools made from carbide ...

There will be a degree of overlap where the metal you wish to drill could be drilled by a number of drill bit options. Your choice may depend on budget and how often you will need to drill. Cobalt drill bits are often the choice for drilling metal due the large range of metals they will drill efficiently.

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Wayne Winton of Tri-County Locksmiths in Colorado wrote an very informative piece for the publication Safe and Vault Technology in 2016 entitled ‘The ultimate guide to Drill bits‘ in which he highlights the abilities, pros and cons of different metal drill bits.

This is without a doubt one of the most import thing to do before you can progress. However many people will not even consider that different metals react differently when being drilled.  Most importantly the metal being drilled will determine:

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H7. H6. G7. G6. F8. F7. F6. E9. E8. E7. D10. D9. D8. C10. C9. B10. mm. Note: In each ... Shaft tolerance range class. Dimensional tolerances for regularly ...

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Heat build up is inevitable when drilling metal. It is important to minimise heat build up as much a possible. A few methods can be used to keep heat build up to a minimum. One method is to drill in short bursts of perhaps 15 second intervals. Another obvious method, although too often overlooked, is to use a metal lubricant. Metal or drilling lubricants come in different forms ranging from oils to pastes. Both have advantages and disadvantages and choice often depends on the users preference.

If buying a new power drill you should consider the size of the motor and whether you require a battery power supply or an electric cable power supply.

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Anyone familiar with drilling stainless steel will confirm that if drilled at too high a speed and without adequate lubrication it will ‘work harden’ therefore making the drilling task infinitely more difficult.

As some of our customers and website visitors are working with and drilling metal every day we appreciate that many of you reading this will be familiar with the basics of drilling metal. However for either first timers or beginners the thoughts of drilling metal can be quite daunting. We believe that drilling metal should not  be feared. Indeed with proper preparation and with the right tools for the job even a first timer should have no problems drilling most metals. We will therefore give some practical advice aimed towards those who have limited or zero experience in drilling metal.

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Most power drills now come with adjustable speed as a standard feature.If you are unsure of the speed to use it is generally advised to start with a slow speed and increase if you feel the drill bit is performing ok.

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Then depending on the metal being drilled and the duration of the job you may need to use ear protection, gloves and a face mask.