If you own a pair of AirPods Max, then you know that over time the headband mesh loses support. This insert is designed to provide additional cushioning so that the APM headband doesn't rest directly on your head. It's super simple to install and remove.
The insert is aesthetically more pleasing than covers, and is extremely comfortable. I used a 40D TPU to print this, but anything with similar flexibility should work.
I used 1mm thick walls all around so that there is no infill. I printed the part on its side as shown in the last photo, and used organic supports.
The author marked this model as their own original creation.