This is an experimental device. Use with caution on your own risk. 

Verify dimensions of the particular device before printing.

Manufacturing instructions:

Ring:

• Material: TPU, 40D or other softer flexible filament.
• 3D Printer: FDM 3D printer, average print time 10 minutes. 
• Slicer settings: 0.2mm layer height, 6 perimeters.
• Post processing instructions: N/A

Diaphragm:

• Material: PETG
• 3D Printer: FDM 3D printer, average print time 4 minutes. 
• Slicer settings: 0.1mm layer height
• Post processing instructions: N/A

Assembling instructions: Insert the diaphragm on the stethoscope and cover with the ring.