3D Printable Earmuffs

I created 3D printable earmuffs. I prepared a long arch for overhead wear and a short arch for behind-the-neck wear.

The materials are 3D printed parts and felt for the earmuffs. The felt has a circular shape with a 10cm diameter.

I designed these earmuffs using Tinkercad. Here are some of the design improvements I made.

Earmuffs: To ensure a comfortable fit on the ears, I added an angle to the connection point with the arch. This allows the earmuff part to bend inward more than the arch's angle.

Arch: To facilitate smooth insertion of the earmuffs into the arch, I added a step on the bottom to shave the edges. While it's possible to prevent elephant's foot during 3D printing by calibrating the slicer and printer, which is quite challenging, I opted to modify the model's shape instead.

Print the parts using a 3D printer, then glue felt to the earmuff portions. Of course, you can use cloth, non-woven fabric, or even paper instead of felt.

You can slightly adjust the length when assembling the arch and earmuff parts, but if it's too long, it's best to cut the arch shorter. Once you've determined the desired length, glue them together.