The cutting may be done in various ways, including: 4.2 Safety features built into the tool.4.1 Personal protective equipment (PPE).As such, one must use accessories rated for such a high rpm to avoid the tool shattering. This is much faster than most cutting tools. ĭie grinders typically rotate at a high speed, typically 25,000 rpm. Die grinders are often used for engraving, cylinder head porting, and general shaping of a part. CNC now provides much of the contouring for die and mold interior surfaces, but die grinders are still very useful for hundreds of cutting needs, from sculpture-like contouring in the absence of CNC, to cut-off of bar stock, to any of the cutting and grinding needs of fabrication, such as in the work of welders, boilermakers, millwrights, ironworkers (steel erectors), sheet metal workers (such as auto body workers and HVAC technicians), to woodworking (especially cabinet making), hacking, and other hobby or business pursuits. Especially before the advent of widespread CNC usage, they were heavily relied upon for contouring via manual skill comparable to a sculptor's. The die grinder name comes from one of their earliest and archetypal applications, tool and die work, where they were used to create the precise contours of dies or molds. Flexible shaft drive versions also exist. All such tools are conceptually similar, with no bright dividing line between die grinders and rotary tools, although the die grinder name tends to be used for pneumatically driven heavy-duty versions whereas the rotary tool name tends to be used for electric lighter-duty versions. A cordless battery-powered rotary tool used for light tasks.ĭie grinders and rotary tools are handheld power tools used for grinding, sanding, honing, polishing, or machining material (typically metal, but also plastic or wood).
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