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It also doesn't hurt to keep the expander clean and polished. I do mine about once a year with some flitz. I find it provides a nice even feel during expansion and takes less pressure. I can tell when it's time to clean and polish. Since I started using a progressive press earlier this year I've noticed that cleaner well adjusted dies are that much more desirable with like 5 operations going on at once.I just checked the expander back in the doe and it's measuring at .219 so I'll haveto replace that