Titanium is a hard material to work with, and is expensive to purchase. It must be welded under an environment free of atmospheric gases, which means the area behind the welds are purged of containment’s (oxygen, nitrogen, hydrogen), then filled with an inert gas (usually Argon) to keep the welds from becoming brittle. Moots start out with precisely mitered pieces, and those joints are then welded together at low temperatures using no weld wire, and then 6/4 ELI (extra low interstitial) titanium weld wire is used for the second pass. This double pass welding method, has proven to be the strongest weld process for titanium, but is obviously more time consuming and intricate. The welding itself needs to be done with care and expertise, so there is a long apprenticeship before becoming a master titanium welder.
Moots have a meticulous quality control, and use the finest grade American made titanium, and those exacting standards show in the end product. I have toured the factory and was amazed on how much time and effort it takes to create any of their products.