Yes, I've had several folks tell me about running the drill in reverse. I haven't tried it. I've made about 50 lamps and I only cracked one globe, a long time ago. The key thing to remember is to keep the drill moving. Do not let the drill stop from the time you begin the cut until the hole is finished! The second you stop the drill the melted acrylic begins to harden and will snag the drill! Keep it moving all the time and you shouldn't have a problem.