While it's fairly easy to drill most holes in metal using nothing more than a handheld drill, you'll almost always get greater accuracy and better results using a drill press. Most drill presses are actually built with metalworking in mind. Pulling down on the handle causes the bit to plunge straight down into a workpiece and make a very precise hole.

ER25Collet dimensions

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For drilling holes in steel that's 1/8 in. or thicker, use cutting fluid or a multipurpose oil like 3-IN-ONE. Lubricating the bit reduces friction and heat buildup, which makes drilling easier and your bits last longer. For easier-to-drill metals like aluminum, brass or cast iron, lubrication isn't usually necessary.

For large holes, a hole saw gets the job done cleanly and quickly. Like twist bits, hole saws chuck right into your drill and will cut through thin-gauge sheet metals like aluminum and steel. Use a scrap of plywood as a backer for the hole saw's pilot bit and to protect your work surface.

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ERcollet DimensionsPDF

After drilling a hole in metal, it's a good idea to remove any sharp edges or burrs left behind. You can buy fancy deburring tools to smooth sharp edges, but before spending money on one, try this trick: Take a twist bit slightly larger in diameter than the hole you just drilled, and gently hand-twist it over the top of the hole. This will smooth out the edge of the hole and grind away any burrs.

Colletsizes chart

Drill presses also come with beefy cast-iron tables with tilt and height adjustments, and allow a variety of clamping options. Speed changes are as easy as opening the lid and moving a rubber belt from one pulley to another. The most expensive drill presses are floor-standing models, but you can buy a decent benchtop unit for about $100.

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ER 16 COLLET DIN6499B AA 0.010 MICRON High Quality Precision Collet. - is backordered and will ship as soon as it is back in stock.

ER40Collet dimensions

ER20Collet dimensions

The standard ER collet is the most widely used clamping system in the world.Made from Alloy spring steel and fully hardened these ER collets are ideal for many machining applications including boring, milling, reaming, tapping and grinding.  Unless specified differently all of our ER collets feature runout of 0.010 micron or less. ,ER collet sizes start at ER8 through ER50.

For most do-it-yourselfers, there will likely come a time when you'll have to drill a hole through a piece of metal. The tools and methods used to do it are almost as varied as the different types of metals out there. Here are 12 tips to make the task fast, easy and safe.

ER16 series collets have a capacity of 1mm-12mm. Each ER16 collet has a range of (1 mm). The size indicated on the collet is the largest size it can hold and can be collapsed smaller within its collapse range of (0.9mm). For example, ER16-3mm can grab a round shank from 3mm diameter to 2.1mm diameter.

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