PROXXON TOOLS: Micro Mill MF70. Micro Mill MF70 (Milling Machines). Small and beautiful - the accurate mill for lab, optician, jewelry, electronic- and modelbuilding projects. ... This mill machine may also be used with our optional three jaw keyless chuck 28941 ... "A serious tool for miniature work. Love it!" John M on 8/16/2011 4:19:26 PM ...