Even within a single type of FDM filament there is an overwhelming amount of choice. Take for example Elegoo’s PETG filament offerings, which include such varieties like ‘Pro’ ...

Researchers have developed a unique enzyme that can decompose PET material. PET is a very common 3D print material, often ...

Then you dip the entire thing in water. The filament costs $49 and works with 3D Systems Cube and CubePro printers. It is even safe to pour the dissolved material down the drain.