Dilemmas....This is a bit long, apologies in advance.
Problem #1 After removing the finish and sanding the ends of the upper cabinet, there remained some dark stains. These correspond to places where there had been scuffs and scratches that were deep enough that the finish was removed and bare wood had been exposed.
Attempted solutions: I thought they might just be stains, but bleaching the wood (using dilute household bleach as well as an oxalic acid wood bleach) did nothing. They did not easily sand out. Sanding may still work if I go deep enough, but I don't want to over sand and have visible valleys in the wood.
So what are these stains? I think I know.
Beech wood is naturally light colored. To achieve a darker color, some beech lumber is "steamed". Not sure what goes on in the wood fibers, but steamed beech is noticeably darker than raw beech.
I think the scuffs and scratches that removed the finish exposed raw beech lumber to 40+ years of North Carolina humidity (and cigarette smoke) and effectively "steamed" these areas, thus giving the darker colors. So what to do?
1. I could try to steam the whole cabinet and maybe that would darken everything and even out the color. I fear this would warp the wood though and I don't know how I would even do this.
2. I could sand a bit more and see if it comes out with a little more sanding. Heavy sanding will damage the cabinet, so if that's what it takes, I don't want to go this route.
3. I could simply varnish over it and live with the color differences as "character".
4. I could try making the table a "rustic" finish. Perhaps the darker stain would hide these variations.
Although I'll try solution 2, I think 3 and 4 are more realistic. I've decided to go buy a piece of european beech lumber, steam part of it to get the dark color, and then apply a rustic stain to see if it colors the dark and light parts of the wood more or less uniformly. That should show me whether solution 4 is viable. If not, solution 3 it is.
Good thing my hourly wage is $0.00!
Kevin