That sounds like a mightily impressive machine Ger21.

I was thinking of going the EG route for vibration damping and resonance reasons rather than strength. In my case, internal bracing of a steel shs would be beyond my limited tools, skillset and budget. What with it being prohibitively expensive/time consuming to have made.

If I can't bring the total gantry weight down to the 75kg range. I'll have to deliver the power to drive it via a suitable servo.

Thanks for the help guys.

I know there's a nice stepper calculator excel sheet.

Can anyone point me in the right direction to start to calculate for choosing the right servo?