What can you tell me about threading say Delrin.

I've hand threaded M8 and M10, but now I'm thinking about largish scale CNC prodcution of a part that requires 8x M4 threads by approx 10mm (or maybe 4x 25mm through).

First, can you auto cut the thread on CNC. I guess you can, but how common is it for someone to have that capability (I'm imagining a stepper motor for a spindle). Or are there other ways?


Or are press fit inserts the answer? What sort of pull out loads would I get from these:

http://www.insertsdirect.com/acatalo...t-inserts.html
http://www.insertsdirect.com/acatalo...it-insert.html