The original is sized for a 44mm Apple Watch. I have a 38mm Series 3, so I modified the cutout so the watch sits nicely in the dock.
I also removed the magnet pockets and changed over to M3. I used special Torx head screws for threading into plastic (McMaster-Carr PN:96817A912). But normal socket head M3 screws should work fine as well.
Instead of a TPU anti-slip pad, I added pockets on the bottom to stick some silicone bumpers. Sized for 10mm diameter bumpers, I normally get them on Amazon.
The author remixed this model.