Thanks again Neale. A lot to consume. I looked at the difference between rectangular and square tubing and agree the benefit is negligible. I watched "This old Tony" video https://www.youtube.com/watch?v=jOvGv9aRKFs where he cuts steel with his build using closed C Channel on the gantry. He sand filled the frame and it is a fixed gantry. I'm sure a huge advantage and not comparing apples to apples for what I need to do.