Hello,
Looks good so far. Have you checked the straitness of the steel you are mounting the supported rail to, comparing the left and right x-axis spans? Also, have you added some weight to the center to of the X-axis span to simulate the gantry weight, checking for deflection. The way it is designed, you could still add a vertical beam under the center point if that is a problem. Looks good though!!
If you need, I could stress that frame for you to see any possible deflection on the cutting bet or linear rails etc. But I don't think it will be a problem, just know our services are here if you need them.
Keep up the good work!
Regards,
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Brian
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