Hi, quick introduction. I've been reading the forum for a month or so now, and have got hold of a Cosmo 130 Mig to help me restore my 1980 Triumph TR7 Sprint DHC. I've been practising with the gasless wire wot came with it, and chances are I'll upgrade to gas when that runs out. I know I need to get a fire extinguisher before I start for real, but was wondering what size. From what I've heard, a CO2 one would be best. I've got a normal sized shed, and a double garage. 2kg? 5kg? Help!