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  3. Glue Series - PEI Print bed Build Surfaces for 3D Printing
How to use PEI Build Surfaces for 3D Printing PEI, which is the open source version of ULTEM, is the perfect material for build surfaces. Learn how to use PEI build surfaces for your 3D Printing bed adhesive. We’ll talk about the different kinds of build surfaces, how to use them, and what we use.