Soluble support material is a special kind of material used in 3D printing to support parts of the object that hang in the air or have complex shapes. During printing, both the main object and the support material are printed together. After printing finishes, the object is placed in a liquid solvent that dissolves only the support material, leaving the main object clean and intact. This process avoids damaging the object by removing supports manually. The execution steps show printing the main object, printing supports, finishing printing, soaking in solvent, dissolving supports, and drying the object. Variables like the state of the main object and support material change step by step, showing how the support disappears while the object remains. Common confusions include why soluble supports are used, what happens if supports are not fully dissolved, and whether the main object dissolves. Quizzes test understanding of these steps and states. Overall, soluble support material helps create clean, complex 3D prints easily.