Original poster: "Anthony by way of Terry Fritz <twftesla-at-qwest-dot-net>" <firework-at-firework.co.nz> Thanks to all who told of equipment damage and techniques to deal with it, a really great response. I have no idea of the size of the coil yet but if the event happens I will mail the list again with the outcome. Kind Regards Anthony Lealand Firework Professionals Ltd www.firework.co.nz