What Size String Trimmer Line Should I Use?

- Dec 02, 2019-

What Size String Trimmer Line Should I Use?


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When it comes to keeping a lawn neat and tidy, the string trimmer shines as a multi-purpose workhorse. Depending on the application, one could use it to mow down hard-to-access areas, trim up grass and weeds that a mower can’t quite reach, clear out thicker brush, and edge out lines for a cleaner looking yard. But, with such a variety of possible applications, as well as possible attachments to meet those demands, it can be difficult to settle on one specific set-up. So, what size string trimmer line should I use? The easy answer is that it depends on how much variable functionality I need from my string trimmer.

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How It Works

Generally speaking, a string trimmer uses a monofilament line to cut through grass, weeds, and small, woody plants. By spinning at a high speed, a cutting head generates enough centrifugal force to hold the line out at a stiff, horizontal angle, making cutting possible. The height and arc of the string trimmer are manually adjusted by the operator, making the trimmer quite useful for cutting around trees, walls, rock beds, etc. In addition, the trimmer can be turned vertically to edge out lines near sidewalks and driveways.

On many models, the cutting heads and lines can be switched out to accommodate a variety of line gauges. Of course, you should check to see what gauges your cutting head can handle, but, depending on the job ahead, you will have plenty of options available. Thinner spooled line, thicker pre-cut line, serrated and square lines, or even blades or chains could be used. Trimmer lines also come in a variety of shapes and thicknesses, as well made from a variety of material. So, which line works best for which application?

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