Sennheiser PXC550 ear cushion ring

These are ear cup cushion rings for Sennheiser PXC550 and PXC550-II headphones. They allow aftermarket ear cushions such as Brainwavz to be installed without the ned to cut up old cushions.

Print the ring with the thin inner edge down as shown in the slicer screenshot. Use supports on the bottom. I printed in PET-G for flexibility needed when installing them.

The second file is a stencil for cutting new foam gasket. Use it to make an imprint on the foam and then cut with a hobby knife and glue them in.