3D Printer: FDM 3D printer, average print time 16 hours. (with MK4 input shaper feature enabled)
Slicer settings: 0.2mm layer height, 3 perimeters, print with the shapes turned upside down.
Post processing instructions: Clean inside the molds from stringing
Assembling instructions: Use paper clips or rubber bands to hold the two parts of the mold together. Push the playdough or other molding material inside. When dried (if necessary) open the molds and carefully remove.