Used your tutorial with a few tweaks. I started by rubbing the stock with acetone and rags. Then dropped them into a 50/50 solution of clorox and hot water for about 2 hours. Then vinegar and water for about 30 minutes to neutralize the bleach. Let it dry over night, sanded with 220. Hand rubbed onyx stain into the grain, then gloss poly afterwards.
Start
After bleach and sand
Stained
1 coat of poly
Coat number 3
Going for a deep polished clear on these