Inverse erosion simulation for optimal object wrapping in 3D printing

Inverse sandblasting for fun and profit

After printing an object using a Polyjet 3D printer, postprocessing is applyed to create the final surface finish. Sandblasting and tumbling are common postprocessing techniques. In order to not “eat” into the object geometry during this polishing, the printer can add a padding layer around the object. However, due to the object geometry, the abrasive processes removes material in a non-uniform way.

The goal of this thesis is to use standard erosion simulation techniques to find spatially varying, optimal object wraps, such that, after a certain amount of abrasion, the resulting object exactly matches the specified measurements.