Milwaukee M18 Half-Inch Router Review: A Rare Cordless Beast

Introduction

A cordless half-inch router is a genuinely rare thing. Most cordless routers on the market are compact trim routers built around quarter-inch bits, so an 18V platform tool that takes half-inch shanks immediately stands out. Milwaukee’s M18 half-inch router aims to bring full-size routing capability to the cordless world, and it arrives with an unusually complete ecosystem: a fixed base, an optional plunge base, and even a track adapter for guide rail work.

What Comes in the Box

The core package includes the router body, a fixed base, five collets (6mm, quarter inch, 8mm, 12mm, and half inch), two spanners, an edge guide, a dust port, and a carry bag. That collet selection is generous by any standard; most routers ship with one or two, leaving you to source the rest. The collets are also removable from their nuts, so replacements are straightforward if one is ever damaged.

The fixed base locks in tightly with a reassuringly solid clamping mechanism. A secondary base with a smaller opening is included too, better suited to template guides and featuring a ring of holes for attaching the dust port. The dust mounting system uses two thumb screws rather than the single fragile screw common on other routers, which makes for a much more solid fix.

The Plunge Base

The plunge base is sold separately, but it is a well-executed accessory. The casting is smooth and cleanly finished, the TPE over-molded handles feel even better than those on the fixed base, and depth setting uses a square guide rod with a micro-adjust mechanism at the end.

Depth stops step up in roughly eighth-of-an-inch (3.2mm) increments across six positions, which makes heavy plunge cuts easy to break into controlled passes without overloading the motor or tearing the workpiece. The plunge action itself is smooth: press down, release, and it locks instantly in place. The router body simply drops into the base and locks, with no extra adapter needed.

Track Adapter and Guide Rail Use

Perhaps the most interesting accessory is the track adapter, which lets the router run on a guide rail just like a track saw. For repeatable straight grooves and rabbets, this is the feature to build a workflow around. The adapter includes measurement markings for setting the offset for different bit sizes and works with both the fixed and plunge bases.

One practical note: the router mounts on the opposite side of the track compared to how a plunge saw is normally used, and the thumb screws used to attach it are easy to drop, so it is worth stashing spares in the base when not in use.

Power and Performance

The speed dial runs from 1 to 6, covering a claimed 12,000 to 25,000 RPM. One small gripe for markets outside the US: the depth adjustment dial on the fixed base is marked in sixteenths of an inch, which is unhelpful in metric-leaning regions.

In use, the tool handles its size well. With a hand strap on the side, it essentially becomes an oversized one-handed trim router, though for all-day round-over work a lighter quarter-inch laminate trimmer remains the more comfortable choice. The half-inch platform earns its keep on bigger cuts, such as a 32mm cove bit or a 1.25-inch flat-bottom trenching bit.

In direct cuts, it performed admirably against a higher-voltage competitor, coming in heavier but holding its own. A torture test plunging a 32mm bit straight into a slab of macrocarpa at full speed was genuinely impressive; the tool only stalled on an extremely deep groove in structural plywood, which triggered an overload flash on the battery that cleared after a rest.

Weight is worth planning around. The fixed-base setup with a bit but no battery sits at around 4.2kg, rising to roughly 5.75kg with a large battery attached. The plunge base adds about 1.1kg over the fixed base. With a lighter 5Ah-style battery, the whole thing comes in around 3.8kg, which is more manageable.

Dust Extraction

Dust extraction is a standout. While routers generally have a poor reputation in this area, the dust port setup here was described as the best encountered on any router. The two-screw mounting keeps the port rigidly attached, and the combination of parts makes for a system that genuinely pulls chips away from the cut.

Things to Consider Before Buying

A few operational quirks are worth knowing. When adjusting depth on the fixed base, loosen the lock lever before turning the dial, or the base will drop unexpectedly and throw off your setting. On the plunge base, keep the plunge lock engaged unless you intend to plunge, since a full-depth plunge at speed can catch you off guard. And the tool is heavy in its largest configurations, so battery choice matters for overhead or one-handed work.

Buying Advice

If you want one cordless router that can trim, plunge, and run along a guide rail, this system covers all three. Buy the fixed-base kit if your work is mostly edge work and lighter routing; add the plunge base if you need controlled stopped grooves and template work; and add the track adapter if straight, repeatable grooves are part of your workflow. Pair it with a mid-size battery for the best balance of runtime and weight.

Conclusion

The Milwaukee M18 half-inch router is a rare breed in the cordless tool world, and it backs up its unusual spec with a thoughtful accessory system, strong cutting performance, and the best dust extraction found on a router to date. The weight and the inch-marked depth dial are minor irritations, but for woodworkers who want full-size routing without a cord, this is an easy tool to recommend.