EmoRebellion-
Glad to hear you're interested in trying this recipe. I'll warn you that there are a lot of variables involved here and there's a good possibility that you'll have problems before you have success, but if you can wait in there and stand to lose a little, you won't be disappointed. That said- I'm not exactly sure what burr grinder is, but from wat I can tell, they're quite large. It most likely will be difficult to clean out because you want to grind up your weed super fine. I can't stress that enough. You want to grind that weed up until it's DUST. If you can Identify it as weed pieces before you add it to your oil- it's not ground up enough. For that reason, if you use a huge grinder, you're going to spend forever cleaning every last morsel of that special dust out of it. My advice- buy one of these:

Linens 'n Things - Krups Coffee Grinder

It's the one I use myself. If you're obsessed with this thing working on the first try, then go with mobyone's advice, and use way less oil. Start with a small ramekin, or maybe a cut out section of a mini muffin tin, and put it in the bottom of your crock pot. Use half a teaspoonfull of oil or less, heat it up on high until it's melted, and add like a half gram of powdered weed. Keep adding weed until, like mobyone said, until there's enough oil to reach the top of the weed without being able to see a skim film of oil on top. Then cook that bad boy for 3-4 hours on high. Stir once or twice at even intervals. Once it's done, harden it in the fridge, and eat some pieces of it. If you did it right, about half of your 'cake' will get you more wasted than you've ever been. Once you get a taste of success you can start playing with your weed/oil ratio and cooking times/temps to get it right for you.

The biggest problem with evryone not having enough success with this thing, is that we all want to end up at the same concentration in our final product, whilst all using the same recipe, but we're all using different kinds of weed. The above described method should more or less guarantee that you'll get really high, but if you want to use this recipe to save weed, then you're going to have to undergo a substantial amount of research yourself. Everyone wants the same results from the same recipe with the same temperatures and cook times, but since we're not using the same grade ingredients, that's just not possible... I hope this helps...

-Mark