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From: (Luds)

Does anyone have a recommendation to learn TIG welding with fingertip
or foot pedal control?

I think that learning is easier with a foot pedal. You have a lot to learn
with hand technique without the added problem of controlling heat with a
fingertip control.
Foot pedals are also more roubust and are intuitive to use. Just like the gas
pedal on a car. They work well for most welding situations but there are some
places where they can be very clumsy, difficult or downright impossible to use.
Welding while lying on you back, in really confined places or on a ladder are
some of the places where a fingertip control is the best way to go. Start with
a pedal then get the hand control.

Richard Coke