HDPE ought to be a very useful 3D printing material.
hdpe
Formlabs’ New Tough Resins Get Closer to True Manufacturing
Formlabs today introduced a new family of materials designed to rival the strength and resilience of traditional thermoplastics.
Researchers Develop Nickel Catalyst to Recycle Mixed Polyolefin Plastics
Researchers have found a way to recycle mixed polymers, or at least some of them.
3D Printing Meets Sustainability: The Promise of Truly Recyclable Material
New research could result in a 3D print material that is truly recyclable.