This model supports 6x3 magnets as opposed to the 5x2 on the original for added strength. Magnets will be a tight fit but should be press fit, may need light taps from a mallet to get fully set.
The lettering was also raised to be closer to the top edge for increased visibility. The letters are easily painted for multicolor prints or can be done via layer swaps.
Slider provided here and is unmodified.
The author remixed this model.