I have a couple of basses with 'almost rosewood' looking fingerboards: one pau ferro, and the other indian laurel, both are a fair bit lighter than the nice dark rosewood boards on other basses I have. I'd like to darken them to look a bit more like brazillian rosewood. Usually an application of lemon (or mineral) oil can improve the appearance of a pale/dry rosewood board, but this was not as sucessful on pau ferro or indian laurel when I tried it.
I've looked up info on this and found various conflicting instructions. It looks like the way to do this is to clean the board with naptha and apply a good coat of either wood dye, leather dye, or a mixure of lemon/mineral oil and either wood or leather dye. various products are mentioned, but there doesn't seem to be any concensus.
I've seen the montypresso wax, but on the videos I've seen, it doesn't really seem to work as well as I would want it to.
Who here has actually done this and can recommend any specific products and a method?