Matt Obrien's comment brings up one of my old ranting subjects: most rotary tools turn too fast. Every time Dremel comes out with a new one, the advertising boasts about how POWERFUL it is. To model builders, especially plastic model builders, torque in such a tool is just about irrelevant. And the slowest speed on most Dremel tools is 3,000 or 5,000 rpm - fast enough to wander around on the surface, and to melt styrene if the bit isn't perfectly sharp.
I've got a small "power carver" made by a company called We-Cheer. I bought it quite a few years ago from Woodcraft, which unfortunately doesn't carry it any more. (There's a newer model, but it's "more powerful" - yay - and has a built-in speed control, so it turns too fast.) Mine is slightly larger than a fat pencil, has no speed control, and (though the ads don't say so) accepts Dremel collets. I built a super-simple speed control for it, using parts I bought at Loew's: a plastic junction box, a dimmer switch, a duplex electrical outlet, a plastic cover plate, a cord with a plug on it, and a few wire nuts. The tool itself cost $35.00, the parts for the speed control about $15.00. I can set it to run at 100 rpm or less, or set the control on 0, hold the bit in the right spot, and ramp up the speed to whatever I want. If my hands could stay still long enough (questionable these days) I could drill a nice set of portholes in an hour or so.
After I established that my primitive speed control worked, I bought a Dremel bottom-of-the-line, single-speed rotary drill for jobs requiring more power. (I really don't want to burn up the WeCheer.) So far I haven't found a use for it on a model.
One time I went to Dremel's website, which has a users' forum. I did a post complaining that Dremel tools turn too fast for modelers, and predicted that a small, battery-operated rotary tool with speeds adjustable from 0 to 2,000 rpm would be well-received in the modeling world. NOBODY replied to my post. So I guess I can't blame Dremel for ignoring it. But I'm still a crusader for small, slow rotary tools.
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.