12 years ago
ID and about 40 thou wide in Acrylic, PTFE and 303 stainless.
For an external groove I could probably narrow down a parting off tool
to do the job but I have doubts I could grind up a carbide or hss tool
accurately enough for an internal one particularly with my eyesight.
Insert tooling seems very expensive for what will probably be a one
off job although having the capability in the future would be useful.
I was toying with the idea of mounting a dremel sized grinding wheel
in the lathe chuck and trying to grind the toolbit accurately in
position but I can't go faster than about 1500 rpm on the stone this
Is there is a better way to do this or is there something available
off the shelf for a tenner rather than a hundred quid?