Spinning Marathon Medal

thingiverse

Requested by a user in /r/3DPrinting, based on photos of this medal. Prints in four distinct parts: One inner disc is printed first. This is followed by the second inner disc. Two outer rings are then created to encase both inner discs. To achieve balance, the spinning part can be weighted with eight American pennies inserted into 20mm diameter holes that are 1.5mm deep. The central section attaches to the outer ring via two 16mm lengths of 1.75mm filament. For a complete medal, halves must be carefully glued together.