The author remixed this model.
My Omnifixos have another feet in comparison with Mike Pensingers verison and wouldn't fit nicely, so I changed the layout for the feet.
Also I slimmed down the walls, cause I thought the original one was a bit bulky.
As I already was changing the design a bit I also added few more holes for magnets (dunno if needed but why not ¯\_(ツ)_/¯) and also holes for the little strap.