David Soria Parra, a member of technical staff at Anthropic, used Claude Fable to design a three-tray rack for three 13-inch Framework mainboards, which was 3D printed in PETG and assembled as instructed by Claude. Parra had been working on the project since at least early June, using Fusion 360 via an "MCP server" to let an LLM communicate with it. Parra stated it was "straight from Claude to printing," though the finished product took 2–3 iterations with the model. He said, "I connected the fusion 360 MCP server and used Claude Code with dynamic workflows. Claude created the Fusion file and the stl for every component. So it was print ready. It also got me the bill of material to buy." The final picture shows three Framework mainboards sitting in the 3D printed frame, with the LLM ensuring a cutout for the heatsink and room for the heat pipe.