When it involves keeping a lawn neat and also tidy, the string trimmer shines together a multi-purpose workhorse. Relying on the application, one can use it come mow down hard-to-access areas, trim up grass and also weeds that a mower can’t quite reach, clear the end thicker brush, and also edge the end lines because that a cleaner feather yard. But, with such a selection of possible applications, as well as possible attachments to accomplish those demands, it have the right to be daunting to settle on one specific set-up. So, what size string trimmer line should I use? The simple answer is that it counts on just how much variable usability I need from mine string trimmer.

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How the Works


Generally speaking, a wire trimmer uses a monofilament line to cut through grass, weeds, and also small, woody plants. By spinning at a high speed, a cut head generates sufficient centrifugal pressure to hold the line the end at a stiff, horizontal angle, making cut possible. The height and also arc of the cable trimmer room manually readjusted by the operator, make the trimmer quite advantageous for cutting about trees, walls, absent beds, etc. In addition, the trimmer can be turned vertically come edge out lines close to sidewalks and also driveways.

On many models, the cut heads and also lines have the right to be switched out to accommodate a selection of line gauges. The course, friend should examine to see what gauges her cutting head have the right to handle, but, depending top top the project ahead, friend will have actually plenty of alternatives available. Thinner spooled line, more thick pre-cut line, serrated and also square lines, or even knives or chains might be used. Trimmer lines additionally come in a variety of shapes and also thicknesses, as well made indigenous a variety of material. So, which line works ideal for which application?

String Trimmer line Thickness

This most likely comes together no surprised to anyone, yet the general preeminence with string trimmer line is the the tougher the application, the thicker the line needs to be. A larger diameter will boost the power and durability that the line, which leads to less breakage and also wear-out.


String trimmer heat comes in a range of thicknesses. For light work, such as trimming grass, 0.065″-0.085″ should be sufficient. For thicker grass and weeds, a heat in the 0.085″-0.110″ range will get the job done, and for thicker underbrush, noþeles thicker than 0.110″ will work.

One note for the cordless cable trimmer users: thicker strings will have actually an impact on her power and runtime. Together the thickness that the line jumps up, more wind resistance affect the cutting head, slowing under the speed at which the engine can rotate the cut head. Higher voltage and beefier cordless trimmers (see: the EGO power Head cable Trimmer ) will probably be able to manage more thickness gauge line much more efficiently, but lower voltage models can struggle through a more thick line. Generally, it’s best to describe the manufacturer’s reference for string size.

String Trimmer line Shaping

The form of the line likewise affects the cutting efficiency. Wire trimmer heat comes in a selection of shapes: round, twisted, square, star shaped, and also serrated. Rounded heat is the most common type available, however it because it lacks a cut edge, that rips the grass quite than cut it. Twisted heat is a little better, as the shape has actually a little an ext of a modern to it.


Some line comes in a square or star shape. The edge of this string trimmer lines space sharper 보다 rounded trimmer line, and cut v the grass rather than tear at it. Serrated heat is likewise an option as soon as it pertains to sharper trimmer line. It has teeth, similar to a kitchen knife, and saws with heavier grass and weeds with relative ease.

String Trimmer line Material

Nylon heat is the most usual line available, but it tends to undertake out and also break quickly on anything yet lighter duty jobs. Manufacturers have actually come out v a selection of alternatives for more heavier duty jobs, however. Some examples include reinforced composite nylon, inside reinforced nylon, and aluminum additive for added strength.

Although no line in the technological sense, several of the beefier wire trimmers have the right to work v nylon, or also metal, blades. Every one of these options improve the to trust of the light gauge nylon string, but if the vast bulk of her trimming occupational centers on irradiate grass clipping, you have the right to probably gain by through cheap, simple nylon line.

Final Thoughts

So, what type of string trimmer line need to I use? The most basic answer: most likely the heaviest and also sharpest gauge that my trimmer can effectively turn without losing power come wind resistance. Assuming her string trimmer has actually the power, which must be the instance for the agree landscaper, you won’t lose cutting effectiveness by utilizing a heavier line top top lighter duty jobs. And, if you need to jump over to more heavier duty trimming work, friend won’t need to mess around with switching over to a line that can handle it.

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However, for many homeowners, round nylon line will probably tackle the vast majority of simple trimming needs. You might need something more heavier for edging and clearing out underbrush, but for handling grass about the house and yard, irradiate gauge ring nylon works. The course, this assumes typical wear and also tear ~ above the heat won’t stroked nerves you also much. If you want to spend much less time respooling her cutting head, switching to a an ext durable material is an option, although a pricier one.