This introductory "hello" will also convey my dilema. I have been planning a project to install European (hidden) hinges on all kitchen cabinets. I have also wanted to get a router for a while so thought I would combine the two objectives and use the plunge router to make the holes for the hinges, as I have 62 to install. A Forstner bit came with the box of hinges, but the 3/8" shaft won't fit my new Rigid router. The collet takes either 1/2" or 1/4" but nothing between. My question(s): is a Forstner bit not intended for use with a router? If it is, can I not get a collet adapter for 3/8" similar to the 1/4" adapter? The salesman at Home Depot (where it was purchased) said no. The widest straight cut router bit I've seen is only 3/4" and I need 35mm or 1-3/8" Any advice?