RE: Do I need a rotary tool???
You don't HAVE TO HAVE A DREMEL, but you will be doing things the long and hard way. I am very glad for my Dremel, it has come in handy so many times.
If you don't have the set of different size inserts, I suggest getting them. They will take from a 1/32" drill bit up to 1/8" drill bit, and, as you will find out, SOME of the accessories for a Dremel have a shaft size that is a little too small for the standard insert to work.