![]() ![]() The rough profiling of the final shape had to be made with rather long tooling. Rough machining of the statue was done with a mix of solid carbide end mills from the CoroMill Plura and Dura families. ![]() We had to give the method and tooling selection extra thought in order to use as little tooling as possible and thereby limit waste. To pull off such a manufacturing feat, we needed to be laser-focused in our selection. “But we couldn’t select just any tool to create the Impossible Statue. “We have more than 10,000 standard products covering drilling, milling, reaming and threading in our back catalogue,” explained Jakob Pettersson, CAM and machining specialist at Sandvik Coromant. The Coromant Capto tooling interface was used to connect the arm and head to the torso of the statue, solid round tools from the CoroMill Plura and Dura families were responsible for finishing all the statue’s surfaces and features, and CoroMill MH20, a high-feed milling cutter, was used to machine the bulk of the stainless steel removed from the workpiece. Sandvik Coromant chose several tools to help sculpt each intricate part of the statue. Careful attention, therefore, must be paid to the tools selected for machining the material.” The material group is characterized by its high work-hardening rates and poor chip-breaking properties during machining. “An additional challenge came from the statue’s chosen material-stainless steel from Alleima-as ISO M materials are notoriously difficult to machine. “We treated producing the statue as we’d treat machining highly specialized, complex parts like those found in the aerospace industry,” added Loikkanen. It also meant we didn’t produce a single scrap component during the entire project.”Īfter finalizing the statue’s design with AI and virtually simulating optimal ways to manufacture the statue using digital twinning, it was time to commence machining. The only time we spent on machines, therefore, is actual production time. “Digital manufacturing means we can prove out that whole complex machining process beforehand. “We needed a phenomenally precise digital simulation to help us machine the statue,” said Henrik Loikkanen, technology area manager at Sandvik Coromant. There were some unique challenges involved in the statue’s design, noted Sandvik Group. Using Mastercam software, a design for a statue with over six million surfaces and complex details was converted. Using depth estimators to build the 3D model, human-pose estimators to refine the body, videogame algorithms to generate realistic fabric, and specialized AI to reintroduce fine details that were lost in previous steps, Sandvik was ready to turn the design into reality. Weighing 500 kilograms and standing at 150 cm tall, the Impossible Statue was officially inaugurated at Tekniska Museet, Sweden’s National Museum of Science and Technology in April 2023.Īfter establishing a 2D design that brought together the styles of the five artists, Sandvik began translating the model into a complete 3D image. The sculpture combines the dynamic poses of Michelangelo’s work, the musculature craftmanship of Auguste Rodin, the somber tones of Käthe Kollwitz, Kotaro Takamura’s Japanese influence and Augusta Savage’s inspirational defiance to unite some of history’s most famous artists from a period spanning 500 years, per its maker. In partnership with Sandvik Group, Sandvik Coromant developed the statue using AI modeling and cutting-edge manufacturing solutions. When Sandvik Coromant engineers Henrik Loikkanen and Jakob Pettersson were tasked with creating an AI-generated, stainless steel synthesis of some of history’s most famous works of art, their metal-cutting expertise was put to the ultimate test.
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