3D printing is a mature technology for use in prototyping and is also increasingly widely used for molds and tools. However, looking forward, 3D printing for manufacturing end-use parts at some scale will grow significantly in market share (and dramatically in absolute market size). Companies in many industries are considering how they can adopt 3D printing for production – for benefits including customizations, as well as for outright cost savings for certain part run sizes. Meanwhile, established companies in materials, manufacturing equipment, and software are looking at how they can participate, enabling and profiting from this growth, and how 3D printer companies form partnerships with these players will help determine the success of 3D printing for making end-use parts. This report examines the partnership landscape in polymer 3D printing as well as looking at how the industry structure will change as 3D printing becomes a true manufacturing technology.