I like using PCB micro drill bits because they come with an 1/8” (3.2mm) shank. I don’t like using them because if I breath on them wrong they break. I never seem to have a problem with breaking HSS bits. My question is, is there another option for micro drill bits? Does any company make HSS bits with a 1/8” or 3mm shank? Has anyone used CNC micro end mills for drilling? Thanks for any insight or suggestions.