DT, Appreciate what your saying which is fine. But, in the basic test piece we are dealing with, a 50mm perfectly round (in section)cylinder, VMC, X axis rotation setup, Top Tool plane machining only, would you expect to see an initial axial movement of -47 deg? I did not and expected an A0 start position. This may or may not be related to the overall problems, I don't know, and I would not be overly concerned where MC decides to start the cycle as it should be m/cing thro' 360deg anyway (if the finished component is correct). ------------------

DT, Understand that -47 is shorter route than 313 but I imagined it would start at 0 which would be even quicker, but then I don't understand where the axial starting point originates from as this is something not defined (by me).... ------------------

JM, Its good to hear that you have achieved some good code using mpfan. mpmaster is just an enhanced mpfan, and my initial problems was the same with both posts. I've gone back to basics and taken a path off a straight forward cylindrical model (50mm dia x 50mm L, 6mm BN x 2mm stepover) just to make the code reading easy. Haven't cut metal but the code would seem to be okay with a correct z axis movement to the od and the a axis incrementing at 4 1/2 (approx) degree increments per line. The angle of rotation continues totalling up (not limited to 360 deg) until the end of the path. I assume that despite the angular line incrementation tool movement would flow. The only other query was the first axis movement which was to -47deg as a start pos'n which seemed a bit odd but I assume is as a function of a length/step over calculation?? - I'm guessing - not really an issue if the end result is okay. Hopefully I can get it on a machine shortly..... Thanks to all brainstormers, the input is appreciated... ------------------

Okay, Just to clarify...no problem creating lovely grahic rotating images, looking good in both MC backlot and verification - great, but the problem arises for me during the messy business of actually cutting metal. Maybe the question should have been: Has anyone actually had experience of using the mpmaster post for generating good quality simultaneaous 4axis code? (not just as an indexing instrument) I've never previously had any problems whatsoever with MC posts with the code always xxxx on, but this is my first attempt at simultaneous 4axis and have built up a confidence (mis-placed?) that if graphically everything was right that the code could be expected to be correct. So, I was somewhat stuck for ideas (to say the least) - confidence shattered! - when the finished article was not a patch on my graphically perfect demonstration.........Could it be just a post limitation (or its not very good for complex work) or have I just plain forgot to do something necessary within the post configuration I wonder? ------------------

PB, I thought that mpmaster was 4th axis enabled from the description on the site and also from the notes within the post. Maybe someone in the know can confirm...just in case I'm trying the impossible...... ------------------

Using Rotary 4th axis programming with V8 for the first time and having problems with the posting (I think). Using the mpmaster post downloaded from this site but despite graphically everything seeming okay in the nci file in MC backplot (animated) and MC verification as well as Predator VCNC (to double check) all goes wrong on the m/c. The rotary axis is configured to rotate the correct direction (as programmed) but axis positions are clearly not correct. Sort of right but completely wrong if you know what I mean!! - but not a tip/centre compensation issue. The result is the same with the mpfan post. I imagine there must be something really basic I am missing - maybe something to switch in the post. Never had a posting problem previously - any tips?? Help............ ------------------