I don’t think there’s going to be any flex. The strut channel base is very solid. I suspect I could jump up and down on the middle of it without much movement. When the wheels are raised it’s pretty hard to move the entire thing much. I think I’ll draw circles around the caster pads and if there’s any movement once I get it going I’ll have to explore options for securing it.
The HDM has arrived and I have it out of the crate and on the base. I have built a platform underneath for the chiller but I still have a fair amount of work to do before I can power it up.