Okay, here goes. I have narrowed it down to 2 finishes for my Frakenjazz project (ash body). 1 Black wood dye and poly finish. 2- tru-oil I am still in the painful process of sanding the body down. Since I once painted it improperly, there is still some black paint in the grain (doesnt look that bad). Due to the black paint in the grain I was thinking of just dyeing the wood black to even it all out, and put a poly finish on it. Or, I was thinking I could keep the black in the grain and just coat it with true-oil (I wiped the body down with mineral spirits and it looked pretty cool). BTW...if I do dye it, can I put a few coats of tru-oil over the dye? Any input would be greatly appreciated.
You can indeed dye the wood and follow with Tru Oil. I did it recently on a project bass. If you are going to use black dye there wouldn't be much benefit in using the oil IMO.
The whitish ash turned a faint yellow when I applied TO - it does darken wood a bit. However, I don't think TO would give enough protection against dings and such, as ash is very soft. Polyurethane is harder.
What about just poly? IMO oil is good to deeply penetrate the wood and deepen the grain. Once you dye the wood black, that may be a moot step. I used Minwax wipe on poly with good results. I do agree that Tru Oil by itself is too soft to offer much protection.