This lightweight CRAFTSMAN V20 Brushless RP Router features a slim profile design and brushless motor to provide the user with a powerful, compact solution for all fixed base routing applications. The variable-speed dial allows the user to select from 7 speeds ranging from 16,000-30,000 RPM for better control and versatility with various applications. This tool-only configuration is intended for buyers who already own a compatible V20 battery and charger.
What does a fixed-base router do, and what can the CMCW400B handle?
A fixed-base router holds the bit at a set depth and is the standard choice for edge profiling, dadoes, rabbets, and template routing. The CMCW400B runs from 16,000 to 30,000 RPM across 7 speeds and accepts 1/4-inch shank bits. It handles decorative edge profiles, groove cutting, and flush trimming on furniture and cabinetry.
What bits are compatible with the CMCW400B?
The CMCW400B accepts 1/4-inch shank router bits — the most common standard for trim and detail routing. The full range of profiles (roundover, chamfer, cove, rabbet, straight) in 1/4-inch shank are widely available. It does not accept 1/2-inch shank bits, which are common on larger fixed-base routers designed for heavier material removal.
Why choose a cordless router like the CMCW400B over a corded model?
Cordless routing is practical when a power outlet is far from the workpiece — on a job site, in a shop without nearby outlets, or when routing cabinet edges assembled in place. The brushless RP motor provides sustained performance under load. For a stationary router table setup where consistent power and unlimited runtime matter most, a corded router is still the stronger choice.
What battery size does the CMCW400B need for real routing sessions?
Routing draws moderate-to-high current. A 4Ah or 5Ah V20 battery is the practical minimum for a meaningful session — a 2Ah pack will work but depletes quickly when running continuous profiles on hardwood. The brushless RP motor extends runtime compared to a brushed equivalent on the same pack.
How does the 7-speed dial work in practice on the CMCW400B?
The variable speed dial lets you match RPM to the bit and material. Smaller diameter bits and harder materials benefit from higher speeds (closer to 30,000 RPM). Large-diameter profile bits — roundovers and coves over 1 inch — run safer and cleaner at lower speeds to reduce tearout and heat buildup. The 7 discrete settings give you predictable, repeatable control.
# CRAFTSMAN V20 BRUSHLESS RP Cordless Fixed Base Router (Tool Only) **Model:** `CMCW400B` **Brand:** CRAFTSMAN **Category:** Router > This lightweight CRAFTSMAN V20 Brushless RP Router features a slim profile design and brushless motor to provide the user with a powerful, compact solution for all fixed base routing applications. The variable-speed dial allows the user to select from 7 speeds ranging from 16,000-30,000 RPM for better control and versatility with various applications. This tool-only configuration is intended for buyers who already own a compatible V20 battery and charger. ## Specifications | Attribute | Value | |---|---| | Product Type | Router | | Voltage (V) | 20 | | Cordless / Corded | Cordless | | Power Source | Battery | | Motor Type | Brushless | | Tool Only | Yes | | Batteries Included | 0 | | Charger Included | No | | Piece Count | 4 | | Battery Platform | V20 | | Barcode (UPC) | 885911834063 | | Country of Origin | China | | Warranty | 3-year limited | | Max Speed (RPM) | 30,000 | | Variable Speed | Yes | | Hammer Function | No | | No Load Rpm | 30,000 | ## What's Included - (1) V20 BRUSHLESS RP Cordless Fixed Base Router (Tool Only) - Battery and charger sold separately Source: https://www.jaspecs.com/craftsman/router/cmcw400b-brushless-rp-cordless-fixed-base-router-tool-only/