Trimmer Routers

About Trimmer Routers

Trimmer routers, also known as palm routers or compact routers, are lightweight, single-handed routing tools designed for precision work and fine detail where a full-sized router would be too cumbersome. These versatile power tools excel at edge profiling, hinge recessing, inlay work, laminate trimming, and shallow routing tasks. Weighing typically between 1-2kg, they offer excellent control and manoeuvrability whilst still delivering sufficient power for most trimming and detailing applications.

The category encompasses both corded and cordless models, with modern battery-powered options from brands like Makita, Festool, Milwaukee, and Bosch offering genuine freedom of movement without compromising performance. Professional-grade trimmer routers feature variable speed control, plunge bases, and compatibility with 1/4" collets as standard, whilst some premium models offer quick-change systems and integration with guide rail systems for enhanced accuracy.

Whether you're a professional joiner requiring a reliable site tool or a dedicated DIY enthusiast tackling kitchen fitting or furniture making, today's trimmer routers combine compact dimensions with impressive capability. From budget-friendly entry-level models to brushless cordless systems with electronic speed control, there's a trimmer router suited to every skill level and application.

Jargon Buster

• Collet Size: The internal diameter of the collet that grips the router bit shank. Most trimmer routers use 1/4" (6.35mm) collets, though some professional models offer interchangeable 6mm or 8mm options for European-style cutters.
• Brushless Motor: Modern motor technology that eliminates carbon brushes, resulting in longer runtime on cordless models, reduced maintenance requirements, and typically 30% more efficiency compared to brushed equivalents.
• Plunge Base: An attachment or integrated feature allowing the router bit to be lowered (plunged) into the workpiece whilst running, essential for stopped grooves, mortises, and internal cuts rather than just edge work.
• Variable Speed Control: Electronic adjustment of motor RPM (typically 10,000-30,000rpm), allowing optimisation for different materials and cutter sizes—slower speeds for larger bits and softer materials, faster speeds for clean cuts in hardwoods.
• Depth Stop: A mechanical adjustment system that limits how deep the router bit can cut, ensuring consistent depth across multiple passes and preventing over-cutting.
• Edge Guide: An adjustable fence attachment that runs along the workpiece edge, maintaining a consistent distance between the cut and the edge for parallel grooves and rebates.

Who Uses Trimmer Routers?

Trimmer routers are essential tools across numerous trades and applications:

• Joiners and carpenters use them daily for hinge recessing, edge profiling, and template work on site installations
• Kitchen fitters rely on them for worktop trimming, template routing, and fitting breakfast bars
• Cabinet makers and furniture makers employ them for inlay work, edge detailing, and precise joinery tasks
• Shopfitters use compact routers for on-site modifications and fitting work in restricted spaces
• Luthiers and instrument makers appreciate their precision for binding channels and delicate decorative work
• Signmakers utilise them with templates for letter routing and dimensional signage
• General builders keep one on the van for door hanging, frame adjustments, and trim work
• Dedicated DIY enthusiasts find them ideal for home improvement projects, furniture restoration, and woodworking hobbies
• Model makers and craftspeople value their control for detailed, intricate routing tasks

How to Choose the Right Trimmer Router

Power Source: Corded models like the Bosch GKF 600 deliver constant power and unlimited runtime, ideal for workshop use. Cordless options such as the Makita 18v LXT or Milwaukee M18 range offer unparalleled convenience for site work, though you'll need to consider battery capacity (4.0Ah minimum recommended) and whether batteries are compatible with your existing tool platform.

Motor Power and Speed: Entry-level trimmers typically offer 400-600W (corded) or basic brushless motors (cordless), sufficient for light trimming and edging. Professional users should consider 700W+ corded models or premium brushless cordless systems with electronic speed control. Variable speed (10,000-30,000rpm) is essential if you'll be working with different materials and cutter sizes.

Base Options: Fixed-base models are simplest for edge work and template routing. If you need versatility, consider models with optional plunge bases (like the Makita DRT50) or systems such as Festool's modular approach that accommodate multiple base configurations. Transparent sub-bases improve visibility of the cutting line.

Build Quality and Features: Budget models (£50-100) suit occasional DIY use but may lack refinement. Mid-range options (£100-200) from Bosch, DeWalt, and Makita offer excellent value with good ergonomics and durability. Premium tools (£200-500+) from Festool and Milwaukee justify their cost through superior dust extraction, systematic accessories, and professional-grade precision.

Ergonomics and Weight: A trimmer router should feel comfortable in one hand. Test the grip position and controls accessibility. Lighter isn't always better—some weight aids control, but anything over 2kg becomes tiring for extended use.

Dust Extraction: Professional users should prioritise models with effective dust ports compatible with workshop extractors. This is particularly important for compliance with HSE regulations regarding workplace dust exposure.

Popular Accessories

• Router Bit Sets: Essential cutting tools in various profiles—straight cutters, roundover bits, chamfer bits, and flush-trim cutters. Start with a basic 1/4" shank set and expand as needed.
• Guide Bushes: Metal rings that fit into the router base, working with templates to maintain consistent offset distances for accurate pattern routing and hinge recessing.
• Edge Guides: Adjustable fences for cutting parallel grooves and rebates at consistent distances from workpiece edges.
• Plunge Bases: Conversion kits that transform fixed-base trimmers into plunge routers for stopped cuts and internal routing work.
• Dust Extraction Adapters: Connect your trimmer to workshop vacuum systems for cleaner operation and healthier working conditions.
• Template Guides and Jigs: Dedicated guides for common tasks like hinge fitting, circle cutting, and parallel routing improve accuracy and repeatability.
• Carry Cases: Purpose-designed storage solutions keep your router and accessories organised and protected during transport.
• Router Mats and Pads: Non-slip surfaces protect workpieces from marking and improve stability during routing operations.

Safety Information

Router safety requires careful attention due to high-speed rotating cutters and potential for kickback:

• Eye Protection: Safety glasses or goggles are mandatory—router bits spin at up to 30,000rpm and can eject chips at high velocity.
• Hearing Protection: Routers generate significant noise levels, particularly in confined spaces. Ear defenders or plugs are essential for extended use to comply with HSE noise exposure guidelines.
• Dust Control: Wood dust is a respiratory hazard and potential carcinogen. Use extraction wherever possible and wear appropriate dust masks (minimum FFP2) when extraction isn't available, in line with COSHH regulations.
• Electrical Safety: Ensure corded models are PAT tested regularly on professional sites. Use 110V tools via transformers on construction sites where required. Check cables for damage before each use.
• Secure Workpieces: Always clamp work firmly—never attempt to hold small pieces by hand whilst routing. Workpiece movement can cause serious injury and spoil the work.
• Correct Feed Direction: Feed the router against the bit's rotation direction (typically left to right on outside edges) to maintain control and prevent dangerous climbing or grabbing.
• Bit Inspection: Check router bits for damage, ensure they're securely tightened in the collet, and never exceed the manufacturer's maximum RPM rating for larger cutters.
• Disconnect Power: Always disconnect from mains power or remove batteries before changing bits or making adjustments.

Frequently Asked Questions

What's the difference between a trimmer router and a full-size router?

Trimmer routers are lighter, more compact tools designed for single-handed operation, typically accepting 1/4" shank bits and suitable for lighter-duty work like edge profiling and shallow cuts. Full-size routers offer more power (typically 1200W+), accept larger 1/2" shank bits, and handle heavier cutting tasks but require two-handed control. For fine detail work, hinge recessing, and laminate trimming, a trimmer router's manoeuvrability is actually advantageous.

Should I choose a corded or cordless trimmer router?

Corded models provide unlimited runtime and consistent power, making them ideal for workshop-based users or extended routing sessions. Cordless trimmer routers excel for site work, kitchen installations, and situations where trailing cables are impractical. Modern 18v brushless models from Makita, Festool, and Milwaukee offer genuinely professional performance. If you already have batteries in a particular system (Makita LXT, Milwaukee M18, DeWalt XR), choosing a compatible trimmer router makes economic sense.

Can I use a trimmer router for cutting kitchen worktops?

Yes, trimmer routers are commonly used with guide bushes and template jigs for cutting hob and sink apertures in worktops, provided you make multiple shallow passes rather than attempting full-depth cuts. For trimming laminate edges flush, they're ideal. However, for cutting worktops to length or making long straight cuts, a circular saw or track saw is more appropriate.

What speed should I run my trimmer router at?

This depends on the bit diameter and material. Smaller bits (up to 12mm) in hardwood can run at maximum speed (25,000-30,000rpm) for clean cuts. Larger bits generate more heat and should be run slower to prevent burning—around 15,000-20,000rpm for 20mm+ cutters. Softer materials like pine may also benefit from slightly reduced speeds to prevent tearout. Plastics typically require slower speeds (10,000-15,000rpm) to avoid melting.

Do I need a plunge base for my trimmer router?

It depends on your applications. If you're only doing edge profiling, laminate trimming, and template work, a fixed base is perfectly adequate and simpler to use. However, if you need to rout stopped grooves, cut mortises, or make internal cuts away from edges, a plunge base becomes essential. Some models like the Makita DRT50 include both bases, whilst others offer plunge bases as optional accessories.