The author remixed this model.
Tapowe made a very nice border for board game Return to dark tower https://www.thingiverse.com/thing:5347322
I remade it to fit the neoprene mat, including holes for 5x2mm magnets.
I had to remove some small parts of the model to fit my mk3s, for printing you need to remove the skirt, otherwise it won't fit a 250 x 210 x 210 mm plate.
You need 8 of these for the neoprene mat