Because guitars are primarily made of various types of wood, the instrument’s playability and tone can vary greatly depending on the state of its components. The wood of the body and the wood of the neck may contract as they dry out. Due to the fact that they are frequently different types of wood, they contract at different rates, resulting in warping or cracking. This can cause damage to the instrument, as well as a change in tone and playability. As a result, using a guitar humidifier while your guitar is in its case can be a very wise decision.
A guitar humidifier keeps your guitar’s wood moist enough that it doesn’t warp or crack too much. Guitar humidifiers come in a variety of shapes and sizes, but the most common is a long, thin sponge encased in latex or other plastic that is moistened with tap water and inserted between the strings of the guitar. The guitar humidifier on an acoustic guitar extends down into the instrument’s body, allowing low levels of moisture to radiate throughout the cavity.
Other types of guitar humidifiers produce the same effect with less effort and expense. For electric guitars, for example, putting a damp rag in a plastic bag and poking holes in the bag to allow moisture to escape can be effective. Place the bag inside your guitar case with the guitar, but don’t over-moisten the rag or mold will grow inside the case and on your guitar.
Over-humidifying your guitar can have the same effect on its tone and playability as drying the wood. If you live in a dry climate, this may not be an issue, but you will need to use a guitar humidifier on a regular basis. A humidifier, on the other hand, may not be necessary in damper, cooler climates and, in some cases, can harm your guitar. Mold can grow on frets and electronics, and the wood can soften too much, affecting the guitar’s tone and playability.
It’s best to ask your local guitar shop for advice, but if you live in a dry climate or plan on taking your instrument on the road, a guitar humidifier is a must-have that will keep your instrument in great shape while also allowing for stellar tone. They are low-cost and will save you money in the long run on repairs.