The problem is, the bolts that form the "feet" of the unit seem to be metric (M10 thread size) but all the casters I find in stores are not metric and they don't quite fit. Has anyone found a source? Or put wheels on the unit some other way? I assume building centres in the States wouldn't carry metric casters either.
I guess building a dolly out of 1x4s or 2x4s would be another way to go, but I like the idea of casters.