Note: I design three types of models: 1-Multi Part models. Models with multiple parts that can be printed in individual colors. 2-MultiMaterial models. I call these MMU models, which can be printed with any printer that has multimaterial capabilities, like the AMS or MMU 3-Onepiece models. These models are designed in one piece and can be painted and can also be printed by an SLA printer. I am a retired software engineer and have taken up the hobby of learning CAD design using Blender specifically for 3D printing. I'm here to help, so do not hesitate to reach out.