Best Bench Buffers (2026): Bench Polishers Ranked

A bench grinder spins abrasive stone or CBN wheels on short shafts with tool rests to remove metal and sharpen. A buffer spins soft cloth wheels loaded with polishing compound on long, extended shafts with open space around them, so you can present a whole part to the wheel for a mirror finish.

Yes, if you polish metal, sharpen and hone knives, or restore parts often. A bench buffer holds the wheel steady at a constant speed, so it reaches a mirror finish on steel, aluminum and brass in minutes where hand polishing takes an hour, and it leaves both hands free to control the part. For occasional polishing, a buffing wheel on a drill or a converted bench grinder is cheaper.

For knives, a buffer with a low speed option is safer and less likely to overheat an edge. The Woodskil 8-inch dual-speed (1725/3450 RPM) is a good value choice, and a variable-speed machine like the JET IBG-8VSB or BUCKTOOL 8-inch VFD (900 to 3,600 RPM) gives the most control. Always buff with the edge trailing, never into the wheel.

For steel, aluminum, brass and copper, a 1 HP or larger buffer with 8-inch wheels keeps the rim speed up under pressure. The JET IBG-8VSB is the best all-round pick, and the Baldor 332B is built for heavy daily buffing in production shops.

Yes, many people swap one grinding wheel for a buffing wheel. It works for occasional polishing, but grinders have short arbors that limit wheel stack width, and you should remove the tool rest on the buffing side and use a wheel rated for the grinder's RPM. A dedicated buffer has longer, often tapered spindles and more clearance for larger parts. See our best bench grinders guide if you want one machine for both.

The things that matter most are motor power, spindle speed, wheel size, and arbor threading. More horsepower keeps the wheels from bogging down under pressure, and a higher RPM raises the surface speed at the rim, which is what actually cuts and colors the metal. Match the wheel diameter and arbor to the buffing wheels you plan to run, and look for long spindles with tapered arbors so you can mount a full-width stack of wheels for the polishing compound you use most.

Buffing depends on surface speed at the rim, not just RPM, so wheel diameter and motor speed work together. A 3450 RPM motor with 6 to 8 inch wheels produces the high surface speed that most metal cutting and coloring compounds are formulated for. Softer materials, plastics, and delicate jewelry benefit from a lower speed near 1725 RPM to avoid burning or loading, which is why dual-speed and variable-speed buffers are popular for mixed work.

Yes. A bench grinder mounts hard abrasive wheels for sharpening and removing material, while a bench buffer mounts soft cloth wheels charged with polishing compound to refine and shine a surface. Buffers typically use longer, tapered arbors so a wide stack of buffing wheels fits, and they run without the tool rests and guards a grinder needs. Many shops keep both, or run a grinder with buffing wheels for occasional light polishing.

Six inch wheels suit compact benchtop units and small jewelry, knife, and detail work where control matters. Eight inch wheels raise the surface speed at the rim and give more room to work larger parts, which is why full-size and industrial buffers favor them. Confirm the buffer's arbor length and thread match the wheels you want, and leave clearance so a fully loaded stack still spins freely.