Metal 3D printed substrate can be reused
While 3D printing technology brings remarkable scientific and technological advancements, the high cost of consumables can significantly increase production expenses. To cut costs and improve resource efficiency, companies that adopt innovative strategies can gain a competitive edge. Recently, researchers from the Open Sustainable Technology (MOST) lab at the Michigan Institute of Technology published a groundbreaking paper titled *"In Situ Formation of Substrate Release Mechanisms for Gas Metal Arc Welding Metal 3D Printing."* This study focuses on the challenging process of removing substrates during metal 3D printing and highlights the potential of using reusable substrates to enhance sustainability and reduce waste.
The research team, including Amberlee S. Haselhuhn, Bas Wijnen, Gerald C. Anzalone, Paul G. Sanders, and Joshua M. Pearce, explored the feasibility of reusing substrates in gas metal arc welding (GMAW) based 3D printing. Their developed release mechanism is particularly well-suited for GMAW, a more cost-effective method of metal 3D printing. In this process, a gas-protected metal wire is fed through a nozzle, heated by an electrode, with the heat generated by the arc between the wire and the substrate.
To test their approach, the researchers used an open-source 3D printer designed specifically for GMAW technology. The system employed a three-axis table to hold the substrate in place while the welder melted aluminum or steel to build the object layer by layer. However, as expected, the final 3D-printed object ended up strongly bonded to the substrate. The main goal of the study was to develop a reusable substrate that could be detached without damaging the printed part, eliminating the need to cut or destroy the base after each print.
This innovation has the potential to revolutionize the metal 3D printing industry by making it more sustainable and economically viable. By reducing material waste and lowering operational costs, this new technique could pave the way for broader adoption of 3D printing in industrial applications.
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