PLA is a special type of thermoplastic made from organic materials, namely cornstarch and sugarcane. The main benefits of PLA are that it is safer and easier to use. Compared to ABS, PLA produces 3D parts which are more aesthetically pleasing. This finish is thanks to its unique sheen and smooth appearance.
The melting point of PLA is much lower than ABS and that makes it weaker. This matters if you are printing moving parts or exposing the parts to high temperatures. Both of these things can result in the 3D objects, cracking, warping or even melting.
