One thing I havent bothered getting the equipment for is welding. Even the cheapest arc welder from Machine mart costs £110+ for one that might manage 4mm.
I used to weld on the farm though, so maybe I could borrow someones kit from the pub.
Ive seen some non-weld ones and they all look a bit leaky. Hmm maybe some fire rope and fire cement could be put into use.
My biggest problem is flueing. My roofing is highly combustible (Bitumen sheeting) so unless I spend a load on some twinwall, I need to work out how to flue safely. I dont think I have much alterantive.
May be I just have a small brazier instead and no flueing - there's plenty of air space in the workshop and enough drafts....just have to use dry wood.
Bear - maybe I could integrate a solar controller/thermal store with a chiminea eh?