What Size Strimmer Line Do I Need? Unlock the Mystery Now!

what size strimmer line do i need

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Have you found yourself staring down at the strimmer line box and asking ourselves, “what size strimmer line do I need?” It’s a question that perplexes even the most experienced of gardeners. But fear not, this blog post is here to help. We’ll be taking you through everything from what a strimmer line is, to which type suits your needs best – plus how different sizes can be used for various tasks. So let us take away some of the mystery and guide you in finding out exactly which size strimmer line do you need.

Table of Contents:

What Is a Strimmer Line?

A strimmer line is a plastic or metal cord that fits into the head of a grass trimmer. It is used to cut through thick vegetation, such as long grass and weeds. The line rotates at high speed when the machine is switched on, allowing it to quickly slice through anything in its path.

Strimmer lines come in different thicknesses depending on the job they’re designed for – thicker lines provide greater power but require more effort from the user; thinner lines offer less power but are easier to handle and manoeuvre around obstacles like trees and flower beds. It’s important to choose the right size of strimmer line for your needs – too thin a line will struggle with tough jobs while too thick a line will make it difficult to control your trimmer accurately.

Types of Strimmer Lines

When choosing a new strimmer line, there are several options available depending on your specific needs:

Nylon Monofilament – This type of string comes in both round and square shapes offering flexibility (round) or strength (square). Nylon monofilament has good abrasion resistance making it ideal for regular garden maintenance tasks such as trimming edges or mowing lawns without wearing out quickly over time. However, this type does not offer much power when tackling tougher jobs such as clearing brambles etc

Steel Wire – Offering excellent strength compared to other materials this option works well when dealing with heavy-duty tasks such as clearing scrubland however due care must be taken when handling steel wire due to its sharp nature which could cause injury if mishandled incorrectly. Additionally, this option tends not be very flexible so manoeuvring around obstacles may prove tricky at times.     

twisted nylon rope

Twisted Nylon Rope – A great choice if you’re looking for something durable yet still lightweight enough to handle easily, twisted nylon rope provides decent performance while being gentle enough not to cause damage during operation. Although slightly weaker than steel wire, this option offers plenty of power when tackling light duties like trimming hedges etc.

No matter what type of strimmer line you need, it’s important to know the basics of how they work and the different types available in order to make an informed decision. In this guide, we’ll explore the various types of strimmer lines so you can find the one that best suits your needs.

Key Takeaway: When choosing a strimmer line, there are several options available depending on your needs: Nylon Monofilament (flexibility/strength), Steel Wire (excellent strength but sharp), and Twisted Nylon Rope (durable and lightweight). Consider the job you need to do before selecting the right size of line.

Choosing the Right Size Line

Choosing the right size line for your strimmer is essential to getting the job done properly. A strimmer line comes in a variety of sizes, from 1.6mm to 4mm thick. The size you choose will depend on what kind of task you are doing and how much power your strimmer has.

For light trimming jobs such as edging or cutting grass around flower beds, a thinner line such as 1.6mm or 2mm is best suited because it requires less power from the machine and can easily cut through lighter material without clogging up or breaking down quickly. For heavier tasks like clearing thick weeds or brush, a thicker line like 3mm or 4mm is better suited since it requires more power but can withstand tougher conditions without breaking down too quickly.

It’s also important to note that different brands have their own sizing system so make sure you double-check before buying new lines for your strimmer. If you’re unsure which size would be best for your particular task, it’s always best to consult with an expert who can give advice based on experience and knowledge about the product in question.

When replacing old lines with new ones, remember that if they are too thin then they won’t last very long and may even break during use; likewise, if they are too thick then they may cause excessive strain on the motor of your machine leading to damage over time. It is therefore important to get the balance just right between strength and durability when selecting a replacement line – this way you will get a maximum performance out of both your machine and its accessories.

No matter what size line you choose, it’s important to remember that different sizes are better suited for different tasks. By understanding which type of strimmer line is best for the job at hand, you can ensure that your gardening experience is as successful and efficient as possible. Let’s look at how using different sizes can help with specific tasks in the next section.

Key Takeaway: When selecting a replacement line for your strimmer, it is important to get the right balance between strength and durability. Different brands have their own sizing system, so make sure you double-check before buying new lines. Choose thinner lines for light trimming jobs and thicker ones for tougher tasks like clearing thick weeds or brush.

Using Different Sizes for Different Tasks

a roll of orange plastic cord

When it comes to strimmer lines, size matters. Different sizes of strimmer lines can be used for different tasks, and the wrong size can make a job more difficult or even impossible. The most common sizes are 1mm, 2mm and 3mm.

1mm is the smallest size available and is best suited for edging lawns or trimming grass around trees and bushes. It’s also good for cutting through thicker weeds without damaging delicate plants or flowers nearby.

2mm line is great for general trimming of grass in large areas such as parks or fields where you don’t need precision accuracy but want to get the job done quickly. It will cut through tougher weeds with ease too.

3mm line should only be used on larger jobs such as clearing long grasses from paddocks or overgrown gardens where you need maximum power to get the job done fast. This thickest option isn’t suitable for use near flower beds as it may damage delicate plants if not handled carefully enough.

It’s important to note that some strimmers have a maximum diameter they can handle so check your manual before buying new line in case you’re limited by what your machine can take safely – otherwise you could end up with an expensive repair bill. Also remember that all types of lines wear down over time so keep an eye out for any fraying strands which could cause injury if left unchecked.

Finally, always ensure that when replacing old strimmer lines with new ones they are securely fitted into place before using them. This will help prevent any accidents occurring due to loose pieces flying off during operation.

Key Takeaway: When choosing a strimmer line, size matters. 1mm is best for edging and trimming around delicate plants; 2mm for general grass trimming in larger areas; 3mm for tougher jobs such as clearing long grasses from paddocks or overgrown gardens. Always check your manual to ensure the maximum diameter can be handled safely, and make sure it’s securely fitted before using.


When it comes to choosing the right size strimmer line for your needs, there is no one-size-fits-all answer. The size of the line you need depends on the task at hand and the type of strimmer you have. Consider what job you are trying to do and then choose a suitable size line accordingly. With so many different sizes available, finding the right size strimmer line should not be too difficult – just remember that when asking yourself “what size strimmer line do I need?”, make sure to consider both your equipment and your project before making a decision.

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