Sorry for the delay.
First off thanks for all your replies, it's interesting to see how everyone tackled similar problems differently.
The printer base is ~22x22 inches. I would like to add 4 inches to both dimensions so that I can run an enclosure (for heat, noise, dust and fumes). The inside width of the cabinet will ideally be at least 24 inches so it can fit two boxes for storing filament side by side. It will be a smaller cabinet as I just don't need another desk in the basement. Cost of basic cabinet bases that are 30+ inches wide is over $120 at Lowes for the basics and I think I would need to reinforce the cabinets as every single one I looked at rocked like crazy. Rocking might be ok, but would probably annoy me. If I can source a solid base at the Restore store for a good $ I would go this route but the several times I went there the cabinets were loose and rickety or the wrong size, and I am tired of hunting for a cabinet and just want to wrap this up.
The base will be ~26x26 and probably a standard 35" height. Sounds like I am over thinking the design a bit - not the first time.
Here is a pic of the base from Blender. Currently a bit larger than desired, but you get the basics of what I am shooting for. I might add a drawer for tools though.
![]()