My design is done in Fusion 360 and now I am getting ready to run my first 6061 aluminum on my R7 with the 800 W spindle setup. I have mounted a squared up a mill vise to clamp my material. Due to depth of cuts needed and the clamp height, I am blocking up the X rails to increase the clearance of the Z axis so that bottom of my material will be ths same level as my normal waste board. The rails will be fully supported. This should fix my clearance issues. I purchased your 6mm single flute bit, but will not be able to use it for the deeper milling and holes I need to machine out. So I switched to a Whiteside 1/4" carbide bit with two flutes. It has a 1" cutting length and a 2.5" over all length.
I am running a metric system and would like a starting point for setting my feed and speed number. Per some research and reading between lines, I plan to run at full spindle RPM or 400 hz (24000rpm). I plan to use 25% of bit diameter for the step over. I understand a common issue with AL is running too slow on RPM and feed rates. I will start with air for cooling but could add some WD40, if needed.
If I run at 1500mm/min, what should my target depth-of-cut ?
I have a lot to mill out and two of these are needed for a test fixture. I don't want to break bit right off the bat so would like to be conservitive and "step" in to it.