Time goes by so fast when you are having fun. 9 Months since I did the math for the gantry and just now have a new initial design for it.

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But there is a problem. My original estimate for weight for the gantry was 40Kg. The weight estimate for this new much stiffer gantry configuration is 100Kg. My question is: Is a 100Kg gantry a problem? The math says I need a stepper that can deliver 1Nm up to 600 rpm to power the two X axis ball screws that move the gantry. That is with a factor of safety of 2. Stepper size looks doable. Does a gantry of this weight pass a reality check?

Thanks,

John C