You can get all manner of feed for 3D Printers now, not just “plastic” You can get nylon, soft rubber type plastic, pliable plastic, I can’t remember the others but there’s a few. I’ve been reading up on them and watching YouTube videos in my quest to decide which printer to go for and was surprised to learn there’s different types of materials. Even wood. Yes, you can print wood.
Wooden earmoulds, anyone? 
You’re ignoring this member’s posts.
Texas Hill Country