The only difference is what screws you’re using. For imperial, #6-32 machine screws are used, and for metric, M4 are used. The other parts (like corners) are designed to be universal for either screw style but for the tool mount you can be specific about which screws you’re using.
Wow… my Flashforge Creator Pro is taking FOREVER to print these parts. Nearly twice as long as the guide times on the printed parts list.
E.G The feet took 4hrs 16mins each.
They are coming out fine, but… this build ain’t gonna happen any time soon!
I found a Rambo 1.4 board from good old Chins for $70… but I think I will get the one from V1… not had much luck lately with the dodgy Chinese folk. Would rather pay more and get one I know is good.