3D model description:Rocky is an alien engineer of the Eridian species in the book/film Project Hail Mary by Andy Weir. He is characterized as a rocky, intelligent, and friendly creature, about 1.5 to 2 feet tall, who communicates through musical chords. Rocky saves star systems from the Astrophage.

Characteristics of Rocky and the Eridians:

Physiology: Rocky resembles a rocky spider, made of metallic and mineral materials (xenonite). He has no eyes, as his home planet, Erid, is dark, and he sees through echolocation.

Unique Biology: Eridians have liquid mercury-based blood, operating with two circulatory systems at extreme temperatures, between 210°C and 305°C, using heat to move muscles that function like steam engines.

Settings and manufacturing instructions:

• Quality:layer height = 0.2 mm

• Infill:density = 15 %

• Material:temperature = 220 ºCplate = 50 ºC

• Speed:print speed = 200 mm/s (K1 Max / K1 / K1C)

• Support:structure = treeplacement = touching build plate