On Feb 11, 2011, at 10:38 AM, Walter Banks wrote: > Alcohol is a good coolant because of its low boiling point. Alcohol would make me very nervous, given the sparks I see the average =20 drill motor make. BillW --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .