Three of my best videos on Titanium welding.

If you are fairly new to welding Titanium, these 3 videos will give you a great foundation

1G titanium weld test.  A very standard test for aerospace welding jobs

The Tee joint in 2F position can be more difficult than the 1G butt joint due to the stickiness of a titanium puddle

Titanium requires stringent cleaning and argon shielding procedures.

In my opinion, if you can tig weld stainless steel, you can learn to weld titanium pretty quickly... but you must follow the procedures and best practices.

For getting a purge on the back side of titanium , a dual flowmeter is very convenient

And for getting the best argon shielding, a furick cup like a BBW, MK14 or Cippy BBW works great because you need a larger argon envelope than what works fine on stainless.