In article , Mark Rand
writes:

In other words, get a light dimmer that will handle the current, one sized at
150 watts will do, and that should do the job. The universal motor on a
Dremmel is quite an inductive load and triacs like that sort of load, so you
shouldn't have any problems with it.

Does it have the feedback detection mechanism that tells the controller that it
isn't running at the speed that the dial position indicates?
Engineman1