How Would You Upgrade An Old Ox CNC Build Into A Serious Machine?

[NeoMorph]

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.

[JAZZCNC]

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

I'm not saying I know better. I know exactly what you are saying and the consequences of heat.!
What I'm saying is what I know to be true from my quit extensive experience of these spindles over a long period of time.

Also just for the record and I've said it many times on here so you can check if you don't believe me. I run my VFD so it shows current not RPM so I can monitor tool wear.
So I know exactly how much it's dropped over the years and yes I agree with you it as dropped from when it was new, but not to any degree that it's a problem.
Because I only ever cut aluminum and pretty much the same grade which is Cast aluminum and same cutters then I've been able to monitor the drop better than most can. So In six years it now pulls roughly 5.6A instead of 5A. It's an 8A spindle so the losses are more than acceptable to me.

Now I've said enough so crack on.!