How To Drill Holes In Sheet Metal Without Burrs

After Drilling A Hole In Metal It S A Good Idea To Remove Any Sharp Edges Or Burrs Left Behind You Can Buy Fancy Drilling Holes Metal Working Projects Drill

After Drilling A Hole In Metal It S A Good Idea To Remove Any Sharp Edges Or Burrs Left Behind You Can Buy Fancy Drilling Holes Metal Working Projects Drill

No Fancy Bits Required Almost Any General Purpose Twist Bit Will Do A Decent Job Of Drilling Holes In Metal In Fact Most Drilling Holes Metal Working Drill

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Put several drops of lubricating oil into the depression you made with the center punch.

How to drill holes in sheet metal without burrs.

After drilling a hole in metal it s a good idea to remove any sharp edges or burrs left behind. The wooden bread layers of the sandwich keep the sheet metal flat and prevent the drill bit from wandering as it bores through the sheet metal. For smaller holes in thin sheet metal i like to use step bits as larger diameter spiral bits like to grab as they break through thin metal which can wrinkle the steel. All images courtesy e z burr tool.

You start off by drilling a small diameter pilot. Whether it is improper feeds and. This week we tackle those annoying burrs that often develop on the parts we are drilling. The drill bit turns into a screw like device.

Twist drills are great for small diameter holes drilling a hole in sheet metal with a twist drill is a rather straightforward operation. Third you need to slow the feed rate down and ease through the back side to avoid the punch through which forms a big nub of a burr. For clean precise holes in thin sheet metal make a wood sandwich. Simply sandwich the sheet metal between two pieces of wood and clamp everything down on a table or workbench.

Secondly you need to be sure the material is cooled as it breaks through to avoid that melted edge as the work gets really thin and can t dispensate the heat this helps to prevent that thin sharp lip burr. Tap your hammer to leave an indentation on the sheet metal. When a hole is drilled a burr is usually generated. First the drill needs to be sharp.

For the cleanest hole clamp a second piece on top of the metal making a sacrificial sandwich. Depending on the tools you have you ll now need to punch or drill a hole where the indentation has been made to produce an accurate hole in your sheet metal. 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. You can buy fancy deburring tools to smooth sharp edges but before spending money on one try this trick.

With eye protection on and hearing protection in place hold your drill perpendicular to the bracket insert the tip of the bit into the punched hole and begin to drill. When drilling thin sheet metal clamp the metal over a piece of sacrificial plywood or other flat sheet good like mdf or particleboard to help prevent the bit from tearing up the hole. Customers demand that parts be smooth to the touch aesthetically pleasing have holes that are without burrs and typically have a nice looking chamfer.

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