After viewing about 90+ hours of video, I did not see anyone use the bench grinders on aluminum. However the camera cut out at 8:14 pm on the 20th. I viewed from about 2 am on the 17th (known about when the wheel was last dressed) until the camera went out on the 20th.
I did happen to see that more members cleaned up their messes in that 90 hour window, than those that did not. I was pleasantly surprised.
I also noticed that the member that used the White lithium grease on the Bandsaw looked for other modes of lubrication first. Looks like we need to get another stick of bandsaw lubricating wax.