Quote Originally Posted by JAZZCNC View Post
Yes, I do know the effects but I also know that these effects are not taking anything away from the motor in terms of performance or longevity that is of any concern. I know this through the experience of using them not through doing the maths.! . . I'm 99% of the time hogging aluminum which would quickly show any power loss and it's been doing this for a long time now so I'm not concerned about longevity because if it died tomorrow it's paid for it's self many times over.

But like I say Crack on and build something overly complex if it makes you feel better.!
Some time, just get your abused motor (that you said you forget to cool at times or not bother to cool) and measure the power draw... then get an identical new spindle and check the power draw on that.

I was TRYING to help YOU in this case, by warning you of what you are doing to the long term condition of your spindle.

But you obviously know better. Next thing you know, everyone will be calling you Trump.