1. A method for generating bounding planes surrounding a solid model, said method is implemented by a conversion computing device including a processor coupled to a memory, said method comprising: receiving, by the conversion computing device, an input solid model; obtaining, by the conversion computing device, a bounding box solid that encloses the input solid model, wherein the bounding box solid is sized such that at least a portion of an interior volume of the bounding box solid is unoccupied by the input solid model; determining, by the conversion computing device, a plurality of faces of the input solid model; generating, by the conversion computing device, a plurality of bounding planes that enclose the input solid model and that do not intersect the input solid model, based at least in part on the plurality of faces; determining that a selected face of the input solid model is nearer to a reference face of the bounding box solid than the other faces; creating a reference plane using a center of the selected face and a normal of the selected face; intersecting the bounding box solid with the reference plane to create a reference surface; creating a reference pad solid extruding in the direction of the normal; obtaining a result face of the reference pad solid that is nearest to the center of the selected face; generating at least one of the bounding planes based on the result face; and storing, by the conversion computing device, the bounding planes in the memory.