A temperature tower is a useful test object for 3D printing that helps determine the optimal nozzle temperature for PLA (Polylactic Acid). This model consists of several stacked segments, with the printing temperature gradually changing in each section. This allows the effects of different temperatures on print quality to be directly and visually compared. The temperature tower not only helps identify the ideal temperature for smooth surfaces and precise details but also highlights issues such as stringing or insufficient adhesion early on.