Brother, as you warn us about pyrotechnics, so I will warn you about the grinder. Bruil is a dangerous tool. Turns turn from 11000 to 13000 revolutions. No God let it out of your hand or break that disc. So you are wearing gloves, glasses and shield for the grinder. Come on in the gloves of nemesis but the shield for the grinder and glasses. OBLIGATORY..

Com: Allen : As another experiment with an angle grinder with a chainsaw blade when it had sliced through an empty paper towel roll like a hot knife through butter along with a length of dowel before those tried it on styrofoam that protects many products during shipping.