It only took a few attempts to realize that all the boring and grinding that I was going to do required a better tool than the drill press and scalpels. I invested in a Foredom FlexShaft. Do mistake it for a Dremel–the difference is night and day. The Foredom and footpedal can go as slow as zero RPM. This is a necessity for working with resin & plastics. A good FlexShaft setup is about $300 and worth every penny. A local watch repairman gave me some great advice on bits and pointed me towards a local jeweler supply shop. They had the FlexShaft and a lot of other tools I needed. I now was grinding out cities faster and a lot safer.