Does anyone know when LEE changed their production method of making moulds? I have been using them from the 1970's and at that time they made a hardened steel mold (copy of the bullet desired). Then mounted the mould halves in a press and clamped them onto the bullet mold, producing the finished mould. I have over 25 LEE moulds and just never took the time or realized that they had gone to a lathe bored system.