Brush cutter line vs blade
The cutting tool matters as much as the machine. Here's when to use nylon line, when to fit a metal blade, and how the two differ on performance and safety.
Most brush cutters can run either nylon line or a metal blade — and picking the right one for the job makes cutting faster and safer.
Side by side
| Nylon line | Metal blade | |
|---|---|---|
| Best for | Grass, soft weeds, edging | Brambles, scrub, woody stems |
| Near obstacles | Safe — flexes off fences/walls | Risky — can damage or kick back |
| Cutting power | Lower on tough growth | High — slices woody stems |
| Kickback risk | Low | Higher — needs care |
| Upkeep | Refill line often | Sharpen/replace blade |
Use line for…
Lawns, soft weeds and edging around obstacles — line flexes off fences and walls safely. Match the thickness to the growth (see our line guide).
Use a blade for…
Brambles, scrub and saplings — a 3-tooth blade for brush, an 8-tooth/saw blade for woody stems (see our blade guide). Always use a harness and full protection, and mind hidden stones.
The verdict
Keep line on for grass and edging; switch to a blade for brush and woody growth. The most versatile machines take both — learn to swap heads and you're ready for anything. See how to use a brush cutter.
Frequently asked questions
Line or blade for a brush cutter?
Use nylon line for grass and soft growth — it's safe near obstacles and fences. Use a metal blade for brambles, scrub and woody stems, where line just flails. Many machines take both, so you can switch to suit the job.
Is a metal blade dangerous?
A blade cuts far more aggressively and can kick back if it hits something solid, so it demands more care: a harness, full protection, correct technique and awareness of hidden stones and wire. Used properly, it's safe and far more effective on tough growth.
Can I put a blade on any brush cutter?
Only if the machine supports one — check the manual. Line-only trimmers and most low-power electric machines can't take a metal blade. A true brush cutter has the power and guard for blade use.
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