In order for your hinges to fit properly, you will have to accommodate for the three parts of the hinge. Step #1 is the the through hole using a 1/8" bit. Step #2 is to fit the taper in the hole to fit this part of the hinge. I use a tapered stone bit on my Dremel tool for this. Step #3 is to enlarge to top of the hole again using a different stone bit to accommodate the knuckle of the hinge. (I will take pics of these stone bits and post in Part #2 of hinging.)