Just thinking out of the box - plasma, laser enhanced 'guided Plasma'? I understand commercial Laser Cutters similar to plasma cutters use compressed air to blow the evaporated material out of the whole! Anybody knows the Russian (now Chinese) Multiplaz Water torch? It has been compared to a laser! So there is water to conduct the arc, and air to remove erroded materials! I hear the are developing plasma drills for geothermal energy exploration! Any thoughts? --=20 Tobias Gogolin Tel. D1 (49) 0151 5187 5210 Tel. D2 (49) 0152 0839 5060 skype: moontogo messenger: usertogo@hotmail.com You develop Sustainable Ranch Technology at http://tech.groups.yahoo.com/group/SURA-TECH an Open Source Electric Motor/Alternator at http://groups.yahoo.com/group/Performance_Axial_Flux and an Open Source Motor Controller at http://groups.yahoo.com/group/GoBox --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .