1. A computer implemented method for preserving structural integrity of 3-D models when printing at varying scales comprising: extracting a first set of structural features from an original scale 3-D model, wherein the first set of structural features represent structural aspects of the original scale 3-D model; grouping the extracted structural features to form a 3-D cueing model, wherein the 3-D cueing model comprises an entry for each structural feature of the first set of structural features and each structural feature's corresponding position, shape, and size; creating a resized 3-D model from the original scale 3-D model; extracting a second set of structural features from the resized 3-D model, wherein the second set of structural features represent structural aspects of the resized 3-D model; adjusting the resized 3-D model based on a comparison of the second set of structural features from the resized 3-D model to the first set of structural features in the 3-D cueing model; and providing the adjusted resized 3-D model as a 3-D model for printing.