How Dull The Edges Of Sheet Metal

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How Dull The Edges Of Sheet Metal

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Category : Metal working

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Adon Smith Published on 07-Oct-2022

Hand trimming. This uses specialized deburring tools which are like tiny knives you run along the metal edge. Filing, mechanical or rotary. Hand files are those flat blades with rows of tiny teeth. A rotary file is part milling cutter and part flat-file and goes in a Dremel or rotary air tool. Sanding. This is when the abrasive paper is rubbed over the edge. You can do it by hand, with a power tool, or on a sanding belt, like the Timesaver 1200 which we own in our fabrication shop. As for the interesting method, how about chemical deburring? There are two approaches. Either use an acid to erode away the raised burrs or subject your parts to electro-chemical deburring. This is like plating in reverse, with metal being removed from high points. And the method that’s a blast? Well, it’s explosive deburring we have in mind. Explosive deburring is where you put the parts to be cleaned in a special pressure chamber. The air inside is replaced with an explosive mixture and then ignited. The resulting heat and pressure vaporize those annoying burrs, leaving the edges clean and smooth. Unfortunately, we don’t get the opportunity to do explosive or chemical deburring. These are generally reserved for complex (and therefore high value) machined parts like castings and forging. It is, of course, possible to be a little over-zealous about deburring. This sometimes happens when we put a trainee on the task. Too much filling or sanding can result in parts that don’t fit together as they should. When that happens, sometimes the only thing to do is throw them in a scrap bin and start again.

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How Dull The Edges Of

By Adon Smith
07-Oct-2022