So, I wanted to put rolly wheels upon my Makita Cases, and wanted it cheap. Got some small rolly wheels, a small sheet of 1/2" (or 12mm for you metric types) playwood, and some cheap screw in rolly wheels. I was actually impressed with those small wheels, they roll well, but enough on the wheels…
The 3mf file is set for the 4 corner prints all together. If you jab them into the holes upon your case, and apply some CA to bottom of said plates, then upon the plywood base ( you can do this case upside down), then you shall have properly located the plates upon the plywood. Add screws of your choosing to permanently afix said plates to plywood, then further add rolly wheels, and away you shall go!
Update! (2022-12-12)
I went to print an additional set only to notice that Makita has 2 styles of bottoms, one solid, the other with a diagonal bridge (see picts), so I made another style for the triangulated insert. Make sure to check the bottom of the intended base box to ensure that the correct model is chosen.
The author marked this model as their own original creation.