If you have your own I anneal after every firing if you have to send it out I guess that's up to you third or fourth firing I would imagine the machine I have is an amp mark2 but there are many that people make them selvesThis Induction Annealing sound incredible. Thanks for the great question and all the great answers!!!! Is there a brand name for the induction annealer device??? Do I need an electrician to run power to this unit???? Do I anneal every 4th or 5th reloading session?????