I assume you might not be aware......MinWax wood hardener is NOT waterproof. That means that once you "stabilize" some wood with it, and it cures.....if the wood ever gets wet, it will turn a milky white. I learned this the hard way....a few years ago I attempted to stabilize with it.....after stabilizing, I placed the wood on wax paper, on a picnic table outside my shop to dry. I forgot it that evening when I closed the shop, and that night we got a heavy dew......next morning as I was walking to the shop, I noticed the wood and took it into the shop. The entire surface of all the blocks were a pasty white color. No problem! I'm gona sand then anyway......didn't work. The "milky" color was all the way through the blocks. I thought it might just have been a fluke....so I did another few blocks, let them cure for a week, then spritzed them with water from a spray bottle.....within 5 mins they turned milky white.
While it might be fun and "cool" to "stabilize" your own materials, unless you're willing to spend big bucks to acquire the proper chemicals, you are time and money ahead by either purchasing from one of the established stabilizers, or sending your wood to them.