728VT REALLY weird chatter

[55fairlane]

I am curious about the milling operation. In your picture, it appears that you were machining from right to left and attempting to remove .030 of material. Is that correct?
If so, the surface of the plate that you are milling needs to be just above the vise, with the absolute minimum stick-out.
If I am correct in my assumption about what type of milling operation you were doing, and you pumped the oiler while doing so, the only real explanation is that you "hydraulically" lifted the table slightly when pumping the oiler. When I owned my 833T, I found the gibs to be of marginal quality at best. Might want to reexamine the gib tightness and fit on the table.

I was taking .030 off the work, I had aprox. 050 to the top of the jaws, I hardly call that excessive

 

[55fairlane]

too long in the same spot. rubbing in the same spot will cause heat, nothing to really cut then it gets all funky... it does the funky wunky dance... (chatter).

With the power feed on, the cutter did not stay in spot to long and rub

 

[7milesup]

I was taking .030 off the work, I had aprox. 050 to the top of the jaws, I hardly call that excessive

I didn't say it was excessive because you gave no indication of how you machined that part at all. I was making an educated guess.

Good luck.

 

[55fairlane]

I didn't say it was excessive because you gave no indication of how you machined that part at all. I was making an educated guess.

Good luck.

Thank you sir. I'm sorry all I'm in a crappy mood. My wife is hormonal and has spent hours yelling at for doing what she has asked me to do