Hey Jon,
That's good advice! If the body shop won't do it, you'll have to shop around to see who has a blasting unit. A friend-of-friend let me use his unit in his shop. I had so much fun, I could've stayed there all day! You can sand blast the blade, too. There's really not much difference between sand blasting and bead blasting, that I noticed. Sand blasting uses super fine sand and bead blasting uses extremely tiny glass "beads" that are as small as the tiny sand granules. Either way, you'll have fun, and the blade should turn out well.
Chad