Re: Eric Cortina on annealing
Posted: Mon Nov 16, 2020 12:20 pm
Rowboat wrote:I also agree that you can over anneal with a flame torch. However, getting back to Erik's comment on the window between annealed and over annealed as ranging between 6 and 10 seconds. Meaning using his equipment after 10 seconds the cases are toast or over baked That's a big window given that as far as I know this is a pretty precise process. I think he may have over simplified this topic a little. He does like to stir the pot though. BTW I'd buy an AMP annealer tomorrow if my wife would let me.
Hmmmm! IIRC he only tested at 6, 10, 15 and 20 second intervals, brass was buggered at 10. That does not give a 4 second window in which things are OK. It means that somewhere in that window, things failed. I would contend (because 6 secs was around where I was with a single tourch) that had Erik tested a piece of brass heated for 6.5 seconds it would give results closer to 10sec brass than 6.
TBH i wou l d have said his 6 sec brass, done with the tourches set close, was over annealed.