One tip,
If you want to do a right handed thread, don't make the mistake of starting at the top and climb milling the thread as you will find out it will be left handed so starting at the top will require conventional milling or if you want to climb mill you will need to start from the bottom. I would recommend Iscar tools with their IC9028 or IC328 grade inserts as the composition of the carbide and the coating they use is ideal for tip life in thread milling I have also used Seco tools for thread milling, they are not too bad on the big stuff but they are brilliant on the small stuff, M8 etc. Solid carbide thread mills.
"A Helicopter Hovers Above The Ground, Kind Of Like A Brick Doesn't"
Greetings From Down Under
Dave Drain
Akela Australia Pty. Ltd.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)