Boyd – Using the sound of a metronome is a good idea from the standpoint that if frees your eyes from having to look at a watch/clock, but since the OP’s setup does not require the operator to move/turn the brass or the torch for that matter, watching the clock is not a burden.
The other problem I have with it and for that matter using a watch/clock is unless you set the annealing time somehow to a relatively long period i.e. closer to 10 seconds, you are going to have a hard time getting a precise annealing duration. Certainly annealing time down in the 2-3 seconds range would be challenging.
The other problem I have with it and for that matter using a watch/clock is unless you set the annealing time somehow to a relatively long period i.e. closer to 10 seconds, you are going to have a hard time getting a precise annealing duration. Certainly annealing time down in the 2-3 seconds range would be challenging.