Whoa those cases look great! Would you mind sharing the file so that we can 3d print these ourselves? And have the measurements of the plexiglass? the wholes to pullbakc the carts is a great idea. Even with standard carts I sometimes have issues with getting them out.
Not for the time being, but I will consider it in the future.
Those cases look great. I was thinking of starting out with side spacer for the PCBs using 3d printing. The added acrylic makes yours look awesome! Love the handle idea also. Great job!