Updated 11/1/2022 to add square version of card.
The original dimensions are 148mm x 78mm x 1.44mm. At 0.30mm layer height, it will take 37m to print.
The square dimensions are 188.7mm x 188.7mm x 2.5mm. At 0.30mm layer height, it will take 2h37m to print. The square version of the card allowed me to maximize my print bed and scale both up and down.
Update 11/10/2022 to add the individual parts of card.
The parts for feather11/feather12 are the same. That is also the case for both feather21/feather22 and leg1/leg2. I used this naming scheme to help me not to forget printing a part.
The author hasn't provided the model origin yet.