Features and working of a trim router

The trim router is extremely light weight and is easy to hold with one hand. Though not as powerful as “full-size” standard routers, these are effective enough to handle most of the basic chores. With an output of less than 1 hp, trim routers are quieter. The motor generates a high torque by rotating at 20,000 to 30,000 RPM. The high rpm rate complements the small size of the bit. In the USA, a collet of a trim router measures just 1/4th of an inch.

The bit of the router is adjustable to achieve the required accuracy for detailed work. The thumbscrew of the router helps in accurate height adjustment. The bit height can be adjusted using the quick-release lever that allows the user to get the desired bit setting. There are different ways of changing the bit of the trim router; either using a single wrench along with a spindle lock, or by using two matching wrenches. If the router has a spindle lock, then the user requires only one wrench to change the bit. In a router with a dual wrench, one wrench is used on the collet, whereas the other wrench fixes on to the top like a key and holds the shaft. This prevents the collet from spinning.

There are several types of cutting that can be done with a trim router such as round-over, V-groove, small cove, and beading bits. The off-set base in a trim router is extremely useful for trimming backsplashes or scribing. The tilt-base featured in most of the routers help in beveling laminate or trimming angled corners and vertical surfaces. Since, the orientation of the bit related to the work piece changes when the base is tilted, it gives the user flexibility to form different profiles using the same bit.  There are various attachments available with routers including dust chute and an attachment that serves as an edge guide. The router bit with a bearing gives a better deal in routing on the edges of a work piece. The edge guide accessory that is available with most of the trim routers delivers the same performance while using the bit without bearing. 
There are two options for the bases of the trim router: the offset trimmer base and the underscribe trimmer base. The offset trimmer base is generally used when wall or a corner needs to be routed within 3/4th of an inch. It is also used for in-place laminating for countertops or while scribing along the back edges to give a perfect fit. The underscribe trimmer base is used when laminating requires forming “seamless” butt joints.

What to look for in a trim router

The three things that one should look for in a router are: smart body, simplicity, and convenience while operating the tool. One should also check the power-to-weight ratio of the tool. The other important factor is the quick bit changing system. Look for the system with which you are comfortable, therefore opting for either a spindle lock and a wrench or two wrenches to change the bit. Easy and accurate fence adjustment is the next feature to consider while purchasing a router. The tool should have a simple procedure for choosing the settings.. The buyer should also be assured that minimal or no chiseling is required after the tool is used for mortising a hinge or cutting hardware.

The body of the tool should be safe, well laid out and easily serviceable. Moreover, it is vital to see if the body is comfortable while in operation. Also, check the accessories packaged with the tool including the number of spare bits. The edge guide for the tool should be selected carefully. The seal-bearing guide is one of the better options. The visibility of the bit while in operation is important, to ensure precision of the work. This is mostly possible in the trim routers with a clear plastic base. However, the clear plastic base routers are not as durable as routers with combination of metal and plastic base. Some routers even have a work light, and/or a micro-adjustment system as an accessory that gives an additional value to the product.. Some of the trim routers have the twist-and-lock system that enables the motor to slide up or down in the housing, allowing the user to adjust the base as required.

It is also important to consider the bit size and the types that the tool is compatible with. Routers with adjustable speed offer the additional advantage of controlling the bit while cutting intricate lines.

Some reputed manufacturers of trim routers include Makita, DeWalt, Ryobi, Amana, Porter Cable, and Oldham.

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