QUESTION: How do you destroy a BRAND NEW $200 MT4 extended point live centre in less than 30 sceonds????
ANSWER: G71 and not enough chuck clamping pressure.
Yes it's all fun and games till someone destroy's a live centre! Ha!!!
What happened was the force from the tool cutting, plus the pressure from the tailstock, pushed the material back through the jaws of the chuck and therefore changed the position of the live centre. The next time the tool came back for the next cut, the tool hit the live centre point and stopped it from spinning. The material in the chuck was still spinning so it skidded on the stationary live centre point and weldd it to the job. The insert in the tool holder decided to get out of town as well.
All in all I trashed the live centre and shattered an WNMG insert. Won't be doing that again!!! Called Hare and Forbes yesterday and the new live centre arrived today. on special too I migh add. Now I can at least finish the job I was doing.
Actually here is a question for you all. What do you guy's and Gal's do to ensure the correct chuck and tail stock force?
Chich