Two Bit Fly Cutter

[jjr2001]

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

The tool can be setup with the cutters ground dissimilar. The two I am using are ground very close to the same but not exact.
If one tool is ground with a larger round nose it should function as a "finish" cut while the pointer one is the first or rough cutter.
There is enough room in the tool bit slot to have them each scribe their own diameter circle providing a coarse cut and then a fine cut
at the same time..

Cheers, JR