The combination of being both low UV resistance and having low-temperature resistance means that it’s not ideal for outdoor use. Parts start to lose mechanical strength at temperatures over 60 ☌.
The low print temperature also means low-temperature resistance. However, PLA is not a perfect material and, just like every other plastic, has some disadvantages. The best use of PLA is for printing concept models, prototypes, miniatures, jewelry, low-wear toys, etc. It’s a hard material, but that also means it’s somewhat brittle, and once it breaks, it likes to shatter. Unlike so-called thermoset materials, PLA can be heated past its melting point multiple times with very little degradation. PLA melts at a relatively low temperature of about 175 degrees Celsius.
