which were designed for intermittent use by hand. They tend to be quieter, more powerful, and longer-lasting. They are also usually based on 3-phase motors, which require Variable Frequency Drives to operate. You can get VFDs that run on single phase power, and they allow you to vary the speed of the motors by varying the frequency of the power they are fed. I've been really happy with Perske router-spindles, but Colombo is another well-respected brand. Either one will cost a lot more than a hand router, though - I could have purchased half a dozen for what it cost to buy the Perske and the Teco VFD that runs it.
Andrew Werby
www.computersculpture.com