i have a heavy duty rotary tool that has a 5000 to 35000 rpm variable speed and a 120V, 1.2A 60Hz motor.....is this ok for porting or will i need an air powered die grinder? by the way....the rotary tool also comes with a flexible shaft and to me it seems to be going as fast as an air powered die grinder.

thanx,
Gufran

 

Don't see why it wouldn't work

 

Air or electric,,,no matter. rotory bits,,you should get a couple that are tappered, one coarse,and a couple for finishing (ie) fine bits. wear safety glasses, always, and don't go crazy grinding ****, smooth and even and in the same direction.

 

do the carbide bits that are made for die grinders fit dremels?

 

A dremell ???It will take you forever with a small powered dremell. but to answer your question,,yes.
just grind down the shaft to fit, but your better off to use a 'real' 30.000 rpm air tools like this.

 

a brick will drive nails, but your better off with a hammer

 

iv'e been porting a weber intake manifold with an electric die grinder rated at 25,000 rpm with an aluminium carbide burr and am very pleaseed with the performance and results!