For the finish, I am using Keda wood dye (www.kedadyeinc.com). It's a powdered dye, I'm using an isopropyl alcohol/distilled water mixture.
I'm testing on a few woods, as the mahogany of the body is much lighter in tone than any of the pieces I have been able to get my hands on.
Red:
Blue:
Once dyed, I will use a water-based grain filler (AquaCoat) so I will be able to get a smooth finish.
I haven't been able to locate any polymerized tung oil - which would be my first choice - because I can't get it shipped to my state. I will be testing tung oil finish (not pure tung oil), Tru oil and Danish oil. Will post pics when those tests are complete. Unfortunately, it is -6°F/-21ºC today, so that's going to be delayed a bit.