I recently saw a post on this board where somebody suggested that if a case was still wet after tumbling, just anneal it and it will dry. I own the AMP annealing machine and I was nervous about this comment. I wrote to AMP and asked a couple of questions. Here is the text of what I wrote:
"Good day Sir!
I wet tumble my brass before annealing, then make sure they are dry, inside and out. What would be the result if I were to miss some moisture inside a case and then annealed it?
Also, I believe you were doing some further research on the effect of tumbling in Stainless Steel pins. Anything new on this subject? I heard previously that the process work hardens the surface of the brass.
Thank you in advance for your thoughts on these matters.
Jeff"
I received the following prompt reply from the President of AMP, Alex Findlay:
"Hi Jeff,
Good questions. It is important to make sure the cases are thoroughly dry before annealing. We found that annealing a wet case results in slightly less annealing because some of the energy is converted to steam. That will mean less uniform annealing across a batch. Have a look at these two articles. The first mentions SS pins.
https://www.ampannealing.com/articles/40/annealing-under-the-microscope/
https://www.ampannealing.com/articles/42/annealing-under-the-microscope/
Regards
Alex Findlay – President"
Plenty of food for thought in Mr. Findlay's reply.
"Good day Sir!
I wet tumble my brass before annealing, then make sure they are dry, inside and out. What would be the result if I were to miss some moisture inside a case and then annealed it?
Also, I believe you were doing some further research on the effect of tumbling in Stainless Steel pins. Anything new on this subject? I heard previously that the process work hardens the surface of the brass.
Thank you in advance for your thoughts on these matters.
Jeff"
I received the following prompt reply from the President of AMP, Alex Findlay:
"Hi Jeff,
Good questions. It is important to make sure the cases are thoroughly dry before annealing. We found that annealing a wet case results in slightly less annealing because some of the energy is converted to steam. That will mean less uniform annealing across a batch. Have a look at these two articles. The first mentions SS pins.
https://www.ampannealing.com/articles/40/annealing-under-the-microscope/
https://www.ampannealing.com/articles/42/annealing-under-the-microscope/
Regards
Alex Findlay – President"
Plenty of food for thought in Mr. Findlay's reply.
