Fits a 0.6 mm thick 27.8 mm diameter circulair circuit board into a Seiko 5 watch case.

Print in PLA or PETG, 0.4 mm nozzle is fine enough. Cut the last ‘wire’ over the opening to fit the circuitboard in under the other wires by stretching the ring a bit.

Fit the board into the case. The opening in the ring is for the watch crown.

In the photo the circuit board is upside down, this better shows the wire in the top layer that is holding the board. Normally, this would be the watch face side and not the battery side as it is in the picture.