Standard PLA
PLA (Poly-Lactic Acid) is an enviornmentally friendly thermoplastic which is produced from the starch of plants such as corn or sugarcane.
Under the correct circumstances PLA can be completely biodegradeable and is desired in the 3D printing industry due to its very strong material properties, the ability to provide accruacy (sharp corners), its easability in printing and its ability to biodegrade in the environment.