Thanks everyone for the replies and help. I tend to take it easy with threadmills myself however I do use the vardex software at times to get feeds and speeds for their threadmills dependant on material… they usually have the lead in feed like 50% of the actual cutting feed. For instance for like an NPT thread mill where there is a lot of teeth engaged in the cut. However I do usually just run it conservatively anyways. Was more just out of interest if I was missing something. Only been using mastercam for 8 months or so, previously used solidcam and that was similar to the contour op in mastercam in terms of the feed rate for linking could be controlled for every type of op including threadmilling. thanks again for the help really appreciate it!

Is there a way you can add a reduced feed rate to a thread milling operation e.g. for arcing into the bore using a multiple tooth thread mill you would maybe want to arc in it at 50% of the feed rate you actually want to mill the helix path at....