.....I have a vacuum pump, I made a vacuum chamber, and last night, I got the idea in my head, to use it........
Here are the chunks of wood, Keyaki pen blanks
I used aluminum foil as a "Boat" for the blanks to float in.
Here is the boat full of color stain (best I could get)
I put them in the vacuum chamber for an hour, or so, and this is how they came out, I really have no idea how far the stain went into the wood, but I'll find out soon enough.