What are the preferred, low-cost options for cutting & joining Titanium? I'll explain my use case: There's a fabricator with long experience working with Carbon Steel & Stainless Steel but now we want to assign him a Heat Exchanger project where the tubesheet & tubes must be Titanium. He has experienced welders & is willing to pay for whatever additional training is needed. But the preference is to go for techniques that have the lowest investment needed. e.g. No expensive CNC machines etc. There may or may not be future work involving Ti so no point investing in a $100k fancy machine. The welding and cutting work has so far been entirely manual and the quality is satisfactory. The part to be fabricated isn't very intricate, just a tubesheet and tubes joined to it. The strength requirements on the weld are minimal so long as seal welding has integrity. Any suggestions? Is this project practical?