@67975218 @woodland creature :pleroma_fox_tan: there are tables you can look up to determine what temperature a  metal should be at and for how long, but when I need to anneal something I've forged I just eyeball it at a cherry red or dull orange and then put it directly in the vermiculite. It works for what I do. Although when I anneal stuff I try to do it in batches so they'll keep it hotter for longer.