Thanks for your question Chris.
I set a parallel in the vise or on the bed if not using a vise and set them by touch.
Sometimes it takes a couple of tries to get it within .001".
I also have a tool setter that I have not yet tried but that should work also.
With a .002" or .003" difference in tool height I don't see any difference in finish.
The fact that the fly cutter is balanced is worth the effort even if the exact tool height is not set.
Runs very smooth when compared to my original "slanted tool" fly cutter. With a 2.5" diameter it is still
a very good tool for my mini mill or any mill. Here is a link to my tool height setter.
http://www.homemadetools.net/forum/c...953#post124982
I also have a 1 3/8" diameter single bit fly cutter that is quite good and runs very smooth. It is of a different
design and is very close to balanced even with the cutter on one side.
http://www.homemadetools.net/forum/f...585#post124734
Cheers, JR