I am considering ordering some of Ian Hawthorne's budget side rail hinges which require an odd size metric bit. https://www.fineboxhardware.com/prod...e-budget-gold/ I'm looking for a 9mm downcut or straight bit with a 1/4", 3/8", 1/2" or 10mm shank. I've looked at Onsrud, Vortex, Freud, CMT, Whiteside and I forget what else. Any suggestions? Has anyone used these hinges?