ok thank you i will slow it down and give it a try

im in inches per rev .. the thread spacing is advancing to far in 360 deg. the 7th thread is almost into the first thread .. I am lost . i made a 5 start and it works perfectly fine . i can't understand why 10 wont work

I am looking for some help with a multiple start thread issue the thread is a 1.0 lead ( 10 tpi ) 10 start . i just can seem to get the threads to fit does any one see anything wrong with this code ? O00010(10 START ) T0404 G54 G50 S300 G97 S300 M03 G0 X6.8 Z.2252 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 W.1 G76 X6.57 Z-.7 K.0825 D.002 F1. G0 Z10. M05 M30