Originally Posted by MOturkey
Running different blades of different weights at the same time isn't going to effect the balance whatsoever
. Each is operating independently on a separate spindle. I think common sense tells one to use the same blade all the time, but I also don't think it is something to stay up nights and worry about.
That's not what I said. I was pointing out that a heavier blade that becomes out of balance will definitely show up as a vibration and quicker beacuse of the rotating mass being greater. Maybe more so on a machine with spindles designed by the manu to use a lighter blade.