Milwaukee has expanded their M12 line of cordless Li-ion power tools with a new variable speed polisher/sander. The new tool has separate polishing and sanding modes to ensure the proper speed range for the job.
The new M12 polisher/sander is intended to be a sidekick to a larger full-size polisher. According to Milwaukee, the M12 polisher is perfect for use on small, thin, or curved areas. Then, a full-size polisher can be used over larger surfaces.
Milwaukee conducted field research with automotive detailers and found that they had shortened their detailing time by up to 20% when the M12 polisher is used in conjunction with a traditional polisher.
According to Milwaukee, the new cordless polisher can deliver the performance of a pneumatic polisher, but without the hassle of having to drag an air hose around.
- Tool-free accessory holder
- Removable side auxiliary handle
- 0-2800 RPM polishing mode
- 0-8300 RPM sanding mode
- Weighs 1.6 pounds
- 5-1/8″ length
The new M12 polisher will be available as a bare tool (2438-20), a 2-battery kit that comes with (2) compact Li-ion batteries(2438-22), and a 2-battery kit that comes with (1) compact Li-ion battery and (1) XC high capacity battery (2438-22X).
The M12 polisher/sander will ship with a 5pc accessory pack that includes (1) 3″ sanding backing pad, (1) 2″ sanding backing pad, and (3) polishing pads (1 wool, 2 foam).
ETA: August 2014
Price: $149, $199, $229 for the bare tool, compact battery kit, and compact and XC battery kits respectively.
Buy Now(via Home Depot)
No, you’re not going to want to use this on a full car, but the new polisher/sander looks to be an appealing opting for light detailing work.
I also think that the new Milwaukee M12 polisher would great to use on headlights and other areas where you don’t really need to size of a traditional polisher.
This is somewhat of a specialty tool, but I think it’s nonetheless an appealing addition to Milwaukee’s sizable M12 tool lineup.
Why Not Just Use a Drill?
Milwaukee’s new brushed motor M12 2407 drill can reach speeds of up to 1500 RPM, and the M12 Fuel 4203 can reach 1700 RPM. The new polisher can reach speeds of 2800 RPM for polishing, and 8300 RPM for sanding. When using a polisher or sander, you sometimes need speeds that high. Speed does the work in polishers and sanders, and not torque.
For reference, the edge of a 3″ polishing wheel spinning at 2800 RPM can move at a linear speed of about 2200 feet per minute. This is the same linear speed the outer edge of a 7″ polishing wheel rotating at 1200 RPM would move at.
As an aside, to get the linear speed of anything that is in constant rotational speed a given distance away from the center of rotation, multiply the circumference (diameter x pi) by the rotational speed. In the case of a 3″ polishing pad, the linear speed at the very outer edge of the pad would be 3 inches x 3.14 x 2800 RPM x 1 foot/12 inches = 2198 feet per minute.
So in addition to a motor and gearing that’s more conducive for polishing and sanding applications, the new M12 tool is designed with a removable auxiliary side handle that should make it easier to use and control than an ordinary 12V-class cordless drill.