Step 1: Select Bottle/Remove Label
To remove the label just run under or soak in hot water. I used a metal spatula to scrape it off and a scrub brush to remove to glue.
Step 2: Bottle Cutter
Make sure to apply steady pressure as you turn the bottle, and try not to slip. You want a straight line all the way around, and only one time around.
Step 3: From Score to Crack
Heat up some water in a kettle, but not to boiling. Pour it slowly over the crack, then pour cold tap water. Repeat until the two pieces of bottle separate. I put a washcloth in the sink so when the top falls, it doesn't break.