Re: [CAD_CAM_EDM_DRO] Cutter, speed and feed for cast iron?

How deep a cut are you attempting. 3/8 sounds a little big
you may have to go to aluminum and put a brass bushing in it.
bob mcknight

I am using a mini mill to mill the lead screw mount bracket for a mini
lathe. The bracket appears to be cast iron. I have tried 2 straight
center cutting flutes, 4 straight, slow and high spiral center cutting
flutes. I have tried them at slow speed and slow feeds, slow speed and
high feed and fast speed at high feed. Duh, it still always tries to
gouge into the work either at the start or end of the cut. The cutters
are all 3/8" shank and cutting diameter. Some are HSS some are
carbide
coated and non coated.





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