String Trimmer Edger Conversion: A Simple DIY Guide

Converting your string trimmer into an edger is a straightforward process that can save you money and storage space. Most string trimmers are designed with the versatility to perform edging tasks with a few simple adjustments or by adding a specific attachment. This guide will walk you through the steps to effectively transform your string trimmer for precise lawn edging.

Understanding Your String Trimmer’s Edging Capabilities

Before you begin, it’s important to understand that not all string trimmers are equally suited for edging. Straight shaft trimmers generally offer better reach and control for edging, while curved shaft models can be more challenging but still manageable. Look for models that have a rotating head or an accessory port for edger attachments. Many modern trimmers, especially those from brands like Ryobi, DeWalt, and EGO, are designed with this dual functionality in mind, often featuring a quick-release system for attachments.

The key to effective edging is maintaining a consistent angle and depth. Some trimmers come with a small guide wheel that helps maintain this consistency, making the edging process much easier and more precise. If your trimmer doesn’t have one, you can often purchase a universal guide wheel attachment separately.

Steps for Manual String Trimmer Edger Conversion

For trimmers without dedicated edger attachments, you can still achieve decent edging results by adjusting your technique. First, ensure your trimmer line is fresh and at the optimal length for cutting. A worn or short line will lead to uneven edges and frustration. Next, adjust the trimmer head so that the line is perpendicular to the ground. This usually involves rotating the shaft or the head itself, depending on your model. You’ll want to hold the trimmer so the line is cutting vertically into the soil, creating a clean edge between your lawn and paved surfaces or garden beds.

When edging, walk slowly and deliberately, allowing the trimmer line to do the work. Avoid pressing down too hard, as this can bog down the motor and lead to an uneven cut. For a crisp line, overlap your passes slightly. Practice makes perfect, so don’t be discouraged if your first few attempts aren’t perfectly straight.

• Ensure trimmer line is fresh and properly extended.
• Adjust the trimmer head to a vertical position.
• Walk slowly and maintain a consistent angle.
• Overlap passes for a clean, continuous edge.
• Wear appropriate safety gear, including eye protection.

Using Dedicated Edger Attachments

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Num	Product	Action
1	BLACK+DECKER 20V MAX Weed Eater, Edger and Sweeper Combo, Includes 2 Batteries and Charger, Cordless Electric Weed Wacker and 130 Mph Hard Surface Leaf Blower, 10 in. (LCC222)
2	BLACK+DECKER String Trimmer, Electric, 14-inch (BESTE620)
3	BLACK+DECKER Weed Wacker with Auto Feed, 14-Inch 2 in 1 String Trimmer Lawn Edger, Powerful 6.5-Amp Lightweight Electric Weed Eater (BESTA510)
4	CRAFTSMAN WEEDWACKER® String Trimmer, 6.5 Amp, 14-Inch (CMEST913)
5	WORX Cordless String Trimmer & Lawn Edger, 12'' Electric Weed Wacker with 5.5 LBS, 20V Weed Eater with 90° Pivoting Head, Battery & Charger Included, WG170.2
6	Cordless String Trimmer Compatible with Milwaukee M18 18V Battery(Tool Only), 12-Inch 3-in-1 Weed Eater with 8500RPM Upgraded Motor, Automatic Line Feed Weed Wacker for Lawn Edging and Mowing-Red
7	Cordless String Trimmer Compatible with Dewalt 20V MAX Battery, 12-Inch Weed Wacker Cordless Auto Line Feed,Electric Weed Eater Battery Powered Grass Trimmer w/6 Line Spools(Tool Only)
8	Houselife 12" Cordless Weed Eater Compatible with Dewalt 20V Max Battery (No Battery), Auto Feed Cordless String Trimmer&Weed Wacker, Lightweight Electric 20V Weed Trimmer&Edger for Lawn, Garden, Yard
9	WORX Cordless String Trimmer & Lawn Edger, 12'' Electric Weed Wacker with 4.6 LBS, 20V Weed Eater with 90° Pivoting Head, Batteries & Charger Not Included, WG170.9
10	20V 12" Cordless String Trimmer With 2 X 4.0Ah Battery and Charger, Electric Grass Trimmer Battery Powered Eater String, Edger Lawn Tool Grass Cutter With 8pcs Line, Lawn Mover For Garden Yard, Orange

The most effective way to convert your string trimmer for edging is by using a dedicated edger attachment. These attachments typically feature a small, durable blade and a guide wheel, providing a much cleaner and more consistent edge than manual conversion. Brands like Husqvarna, Stihl, and Echo offer robust edger attachments that are compatible with their multi-tool systems. These attachments are designed to easily connect to the trimmer’s powerhead, transforming it into a specialized edger in minutes.

When selecting an attachment, ensure it is compatible with your specific string trimmer model. Check the manufacturer’s specifications for compatibility. The blade on an edger attachment is designed for cutting through compacted soil and grass, offering superior performance compared to string line for this task.

Maintaining Your Edger Conversion

After each use, it’s crucial to clean your string trimmer and any edger attachments. Remove any grass clippings, dirt, and debris from the trimmer head, shaft, and especially the edger blade. This prevents buildup that can hinder performance and lead to premature wear. For edger blades, inspect them for nicks or dullness. A sharp blade is essential for a clean cut and reduces strain on your trimmer’s engine. Sharpen or replace the blade as needed, following the manufacturer’s instructions.

Regular maintenance, including checking the air filter and spark plug on gas models, will ensure your trimmer continues to perform optimally whether you’re trimming or edging. Proper storage, keeping the unit clean and dry, will also extend its lifespan.

Safety Considerations for Edging

Safety is paramount when operating any power tool. When converting your string trimmer for edging, always wear appropriate personal protective equipment (PPE), including safety glasses or goggles, long pants, sturdy closed-toe shoes, and hearing protection. Edging can kick up more debris than standard trimming, so extra caution is advised. Ensure bystanders, especially children and pets, are at a safe distance from your work area. Never operate a trimmer with a damaged guard or without one, as it provides crucial protection from flying debris.