Thread Milling has numerous advantages. The same tool can create ID and OD threads, Right and Left hand threads, different thread class fits and, perhaps most importantly, it can cut threads in multiple passes making it a great solution for everything from aluminum (gummy chips) to steel (harder material to tap). It can also cut small threads up to virtually unlimited diameter threads!
This video shows how easy it is to Thread Mill in SprutCAM using the Tormach PCNC 1100 CNC Mill! We then machine and thread mill brackets for the Rimfire Steel rifle targets!
Rimfire Steel 22 Plate Rack / Biathlon targets: www.rimfiresteel.com
Thread Milling AR-15 Buffer Tube: https://www.youtube.com/watch?v=KBr-qUpP_2s
Tormach Tutorial Video: https://www.youtube.com/watch?v=7jnar9aaDW4
Lakeshore Carbide Thread Mill: http://www.lakeshorecarbide.com/516-18carbidethreadmill.aspx
Great online article on Thread Milling versus tapping: http://www.mmsonline.com/articles/a-time-to-tap-a-time-to-mill