Cast mold machineing toolpath suggestions

[Phil f]

Been machineing for about 10 years but relatively new to cast machineing. Lookin for aome suggestions on the optimal roughing toolpath for machineing a cast steel mold with approximately.250 on all surfaces. Part has shape but is relatively shallow in most places. Surface finish contour and waterline run into too much stock at beginning and in shallow areas. Unfortunately machines top speed is only 6000 so opti-rough is not an option. So far the only thing i have found that works is multiple surface finis contours at different atock to leave depths or a surface rough pocket that starts at highest point and cuts alot of air for the first half of the program. Any suggestions would be appreciated.

[AMCNitro]

Why is Optirough not an option with 6000rpms?  Adjust feed according to the RPMs.  One of our machines only does 6000rpms and I use Optirough all the time on it.

[Leon82]

I would copy the model and push pull to a stick size and optirest with the desired material cut depths

[JParis]

Modify a copy of the model to add stock where you have it, there use Rest mill...