I want to use 1.25 inch dom for my 4x8 LR4 to make the gantry perfectly straight. I have not been able to get it flat so my gantry seems to sag in the middle. I have heard that the dom tube is very straight and more ridgid which always helps.
Would it be ok to use it with the 32mm braces? I think it should be fine where i can tighten the braces down but i wanted to be sure before starting down the path.
Your’s sags in the middle? Is the X axis the long one (96")? I have a 48" X axis with no sag. I have heard some insert a wooden dowel in the middle that can help stiffen it up. I’ve not tried that though.
I would think the 32mm braces would work just fine.