Or electromotive resonant vibration?
On the other hand, that sounds like a personal electronic device.
For a relatively inexpensive option I really like the Spark SK3. Very smooth threads, the 3 speeds are about where I want them, and the machining on themagellan Today, 01:38 PM
I like electromotive resonant constriction. But, that's just me.LedTed Today, 01:37 PM