Great Dane excavating co.

[Mustang46555]

Best way to remember feeds and speeds is surface footage controls your RPM's (based on material being cut) then you can vary your feed to get the chip load you want, usually figured in amount per tooth. Is your CAM software programing in feed per minute or feed per revolution? Very nice finish on the parts shown, looks like you're off to a good start. Don't feel bad about going slow on your first cut with a new program. I've been doing CNC for over 20 yrs and the first part off always takes extra time. Your mill will appreciate the extra care too!

[tc1cat]

I agree with Dennis. Going slow never hurts unless it is in plastic. Then you melt things including delrin. You are very lucky to have the area available to use coolant. This will help with tool life and finish. Also lets you go faster when you get use to the machine. Like Dennis, I have over 25 years of CNC and manual machine experience to draw from. Even have my own machines but no area to use coolant, so I go slow to make my parts. Good luck with your mill!!

[Wiskybilt]

First run on a new program, or even setting it up again later is always a good time for caution. Saves tools, vises and dirty underware! I slow it all down and often single step through so i can read code as it spools and make changes if need be. Been doing it as a business since 1998, and sometimes use Mastercam to produce code, but usually write it out of my head.

You have a very nice finish on there. Doing great.