if you really wanna burn the shit out of your calves try this.
get on the standing calve raise machine and set the weight at about 250. Then proceed to do as many reps as you can, then stop for ten seconds and jump back on there and again, do as many as you can. Keep doing this untill you get to 100 reps. You shouldn't be able to walk very comfortably after that, if you can, you need to use more weight. Have Fun!!!