The author remixed this model.
I tweaked both the bottom and top case to fit the waveshare pcie to m.2 nvme adapter.
I get the fuzzy skin with standard PLA by this setting: fuzzy distance 0.3mm, fuzzy thickness 0.2mm. Make sure you set the seam location to random.
The related adapter and its wiki:
https://www.waveshare.com/pcie-to-m.2-hat-plus.htm
https://www.waveshare.com/wiki/PCIe_TO_M.2_HAT+