Acklands. Any decent welding supply place. KBC Tools.
That should get you going.
Considered using the Tepilac makers website to find distributors?
Expensive stuff. At least, compared to other ways of seeing too it that you reach a good anneal but don't fry it, like just marking it with a Sharpie.
That's purely unscientific, but it works for me!
Cheers
Trev
