Join date: Oct 2009
3,918 IQ
Im looking to add a sound porthole to the side of my classical and removing my polyurethene finish to my classical guitar.

Is it possible to add a less tone killing finish and add a porthole without internal damage?
Registered User
Join date: Jun 2006
12 IQ
Why are you assuming polyurethane is tone killing? When done properly it's just as thin as nitro or an oil rubbed finish.