I have been working with wire for more than 25 years, and have used many gauges, usually in half hard. However, sometimes I get more soft wire than I want. I remember my old teacher telling me when I complained about soft wire that it will work for a while, but then it’ll get hard. I have found that while shining the wire with a cloth that if I bend it gently and straighten it a few times, it does indeed get harder. Plus, if I twist half hard, it can get too hard to use, but if I twist dead soft (square of course), it gets just about right. What do you think?