A new arm mount and Dremel Flex Shaft holders for the Mini Drill Press by MarkBenson. The nut that holds the arm mount on the original file was rotating when I moved the arm, so I made this one with a set screw instead of a nut. Besides the arm mount, there are Dremel Flex Shaft holders that works fine, but are not recommended. They are hard to put on the Flex Shaft and may break on the process.Print the arm mount and use it like the original, but remember to make a flat on the shaft first, so the set screw can hold the arm mount in place. The Dremel Flex Shaft is not really recommended. It works, but it's hard to put it on the Flex Shaft and may break on the proccess.