Re: Re finishing a guitar
Yes, finishes affect tone... to some extent.
There are mainly two differnent types of laquer/finishes on guitars, Polyurethane and Nitrocellulose.
A thin finish will not restrict the wood to vibrate as much as a thick finish.You could refinish a guitar because of this, it has a too thick finish (often the case with cheaper guitars).
- Nitro is a more tone friendly finish, it's often a feature of more expensive guitars and is applied thin. It isn't too durable!
- Cheap guitars often sports a poly variant that creates a "shell-like" protection coat around the wood. It's often thick and not tone friendly. Bulletproof!
- Some guitars have a variant of poly that isn't "shell-like", is often applied thin and looks alot better than the thick poly finishes. Somewhere in the middle!
Nitro: Almost always (read always) applied thin, harder to work with and not so environmentally friendly, it isn't that durable and ages by shrinking "into the wood", hardens, cracks by temperature and pressure changes... but that's the beauty of it. It looks very good and is imo THE finish for vintage style guitars. As it also was what was used from the beginning.
Polyurethane: There are two different types of "poly", one that makes a really hard "shell" on the body, like a thich transparent cover on top of the wood itself. It is also said to prevent vibrations in the guitar body, which isn't good. The other variant of "poly" isn't as shell like and doesn't prevent the guitar body from vibrating in the same manner as the first variant. (Not sure if the above is completely true and I don't remeber the names of the two variants but I read this not long ago on some of the guitar forums). The other variant of "poly " isn't such a bad a finish, it can be applied very thin...just like nitro finishes. But it's more durable, won't crack, won't age as beautifully as nitro does. For example PRS uses to some extent thin poly finishes on their guitars, my Tokai Love Rock LS-80 had poly finish that is very thin as well apart from that neck that are finished in "poly" uses this variant as well.
Kinda messy written! Sorry... I need to go to sleep now. 1 pm :sad: G'night!