He was sharing that he felt his mill breaking apart when he was mill deeper (can't recall how deep), so much so that his son ran into his shop to see what happened. I was rather disappointed when I hear this as I had just bought the column and had it installed. Before I dozed off, I make a mental note to do some testing the next morning.
As I'm quite a "chicken" myself when come to machining, I set the maximum depth of cut (DOC) to be 1mm for the tests. This was the max I think I will go when using the mill as I'm not in control, so to speak, when codes are being run.
The stock was setup using the low profile clamps I bought together with the milling plate. A piece of aluminium I have lying around was used. DOC to test will include 0.5mm, 0.75mm, and 1mm.
The 2nd slot: DOC 0.5mm, F200, 2000 rpm.
DOC 0.75mm, F180
DOC 1.00mm, F180
It seems to me at this point that I've the mill trammed along Y and that the mill did its job well with even up to 1mm.
I've no intention to go beyond 1mm.
The cut pattern at the cut surface shows that the mill is pretty much in tram along X too. I'm so happy!
I've taken a video using my iPhone showing the 1mm DOC. Pardon me for the last part of the video.