My Old Tools
Well-known member
I make a few parts for obsolete machines. I love an excuse to use my South Bend 13. I make these replacement arbors for old Millers Falls hand boring machines. I make them in two parts with an interference press fit. I also make the square key for locking in the bit. After 100+ years of use with steel on cast iron, the old shafts usually show a good deal of wear.