Dan's method, and a method that I've since copied, involves making a small cabinet that you can place a rotisserie motor in. Yep, just like you'd use to cook a roast or a chicken on your grill.
I made my cabinet out of an old kitchen cabinet, drilled a couple of holes in the sides and mounted the rotisserie motor on one side, passed the spit through the hole and out the other side with a support bearing so it'll turn freely. I also mounted a light fixture in the floor of it with a 100 watt bulb - more than enough heat to raise the temp in the cabinet to about 90 degrees, so the oil cures properly.
Rather than using the cabinet doors, I replaced them with a couple pieces of plexiglass sheet that I mounted in some wood I channeled with the table saw so that I can slide them back and forth.
I even use the skewers for a roast - I attached a couple strong neodymium magnets to it, then cover the blade in painter's tape. After I apply the oil, I open the cabinet, stick the blade to the magnets and start the rotisserie motor. This way, the knife slowly rotates and the oil never gets a thin area and a thick area of oil - it all dries pretty evenly, and at the same thickness.
Sand the knife handle to it's final grit, then apply the oil and put the knife on the rotisserie. Turn it on, and let it run. 24 hours may be enough to cure the oil, but I find that more time is better. A couple days certainly doesn't hurt! I turn the rotisserie off after 12 hours and just leave the light on to keep the temperature up.
Once the oil has dried, re-sand back down to bare wood and repeat. Every time you re-sand you take the surface layer off but fill the open pores of the wood with oil. Keep going this way until the pores are filled, then one more good coat and let it cure.
Once it's cured, I follow with progressively finer grits of pumice stone and then rottenstone, all with a little light mineral oil in a slurry.
Lots of work, and requires considerable amounts of time, but I've yet to see any other finish rival it.
Please pardon the wretched photos, and the wretched beater knives in the photos - I'm a pinch pressed for time today, but I promised Patrice I'd post!!! Sorry to leave you hanging so long, buddy!