I've received, and used the annealing kit I recently purchased after viewing your YouTube instructional. Things went so well, and precisely as described, that I just wanted to say thanks, both for the good design of your equipment, but also, for it's ease of use ... I followed your instructions, using your equipment, and indeed, the neck shoulder Tempilaq turned the appropriate color on queue, and the lower temp Tempilaq, painted on the lower body of test brass, did not turn from it's original color, indicating the annealing was localized to the right area of the brass ... I was worried this would be a difficult and imprecise process, and thanks to the design of your equipment, I found it was simple and straightforward. I know I can get consistent results with your process ...