I started out using Brass Pattern plates also. I have used the entire plate and just position my earring blanks on the plate using Neil’s method above of card stock or even a blank brass sheet. The Brass will eventually stretch in places and also curl I just flatten with a leather mallet and go on. I have switched to the steel plates available from Potter, Rio, and others. It is said that that steel is softer than the rollers of the mill nut I still use card stock or brass to ensure I don’t damage my rollers.
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