As you can see by the first part of the video, I ran the g-code with the mill zeroed a couple of inches away from the workpiece so I could make sure I was away from the clamps and everything was okay.
The job started okay. I seemed to have good rates for the hole drilling.
But when it came to some longer cuts, it seemed to strain. I was taking off 1/64th inch per pass which I figure is small so perhaps I was going too fast. I threw some water onto the cutting area to see what would happen. I had to cut the feed rate right down and it still eventually started to strain.
In fact, I reached a point where it wasn’t cutting at all.
I looked at the endmill after finally stalling the mill. It was gummed up with aluminum. I’m supposing it melted the aluminum.