String trimmers are useful tools used for everything from lawn edging to removing weed and grass growth in rocky areas where mowers should not go. The key, though, is in selecting the right trimmer for the job.
String trimmers do as their name implies. They are machines that use whirling plastic 'string' to do finish cutting or trimming. Even though there is a variety of plastic string thickness and texture, most models are limited to what fits the specific machine. If a specific trimmer offers a choice in types of string, choose thick.
Also called weed eaters, there are two basic power sources for these lawn tools: gas and electric. Each type has benefits and disadvantages.
Electric
The highly portable and relatively low-priced electric string trimmer is arguably one of the most popular among average homeowners.
Less expensive than their gas-powered counterparts, electric trimmers can be purchased either as corded or cordless models.
The corded models are usually the least expensive. The models featuring less than 3 amps are suitable for small city lots and light use. Models with more than 3 amps are powerful enough for larger yards but they are not powerful enough to cut brush. The fact that they are corded also means that there must be accessible electric outlets and probably a long extension cord.
Portable and lightweight, battery-operated models will do a good job with basic grass and weed trimming jobs. The 12-volt battery does have a fairly short life, but extra battery packs are inexpensive and convenient.
Gas Engine
These come in 2-cycle and 4-cycle engine models. 2-cycle gas engine trimmers have plenty of power to make short work of a large yard. Models that feature separate choke and throttle controls are preferable because they are easier to start. The 2-cycle engine trimmers are a good choice for those who want power while staying within a budget. Some 2-cycle engine trimmers also accept metal blades and other attachments, making them quite versatile for the price. The downside is that 2-cycle engines require a gas-oil mix. This is a convenience rather than a quality issue.
4-cycle engine weed eaters are real powerhouses, and they look it. They are generally the largest and with the greatest 'reach'. They use regular gas, are easier to start, run smoother than a 2-cycle engine model, and are quieter. The 4-cycle engine trimmers are versatile machines that accept a variety of metal blade and other attachments. The drawback for the thrifty consumer is price. 4-cycle engine string trimmers are typically more expensive than the others, but will do more as a result.
