Large scale tooling is emerging as one of the most promising applications of the products of Extrusion Deposition Additive Manufacturing (EDAM). Two-sided compression molding introduces several additional challenges beyond those seen in single-sided applications, but as will be discussed in this presentation, modeling and simulation are excellent tools for addressing these challenges. The compression molding tool was printed and used successfully for compression molding a demonstration blocker door part made from a thermosetting prepreg platelet molding compound (PPMC).