Stenko Vlad/Shutterstock Whether you recently bought a new 3D printer or have been using one for years, the thought of leaving it running overnight may sound tempting, especially for complex prints that could take 12-24 hours. But is it safe? The short answer is no, not really. There are several reports of older 3D printer models catching fire, so you may expect the modern ones to be safer. While it's true that newer 3D printers are more reliable , with better thermal management, auto cut-off functionality, and a physical enclosure to prevent accidents, it still doesn't make them completely safe. Many people run them overnight, even for days at a stretch. If the temperature sensors fail and the filament continues to heat up, it could damage printer components. Or worse, there's a risk of fire. Remember, a poorly maintained 3D printer can also impact print quality, often resulting in a complete mess.…