AR4 Mark 5: This Open-Source 6-Axis Robot Arm Is Finally Done
A six-axis robot arm sitting on your desk used to mean five figures and a service contract. Chris Annin's AR4 quietly tore that idea up — and with the…
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FDM 3D Printing in 2026: Engineering Structural Parts Beyond Prototyping
For years, Fused Deposition Modeling (FDM)—also known as Fused Filament Fabrication (FFF)—was primarily viewed as a tool for rapid prototyping. Engine…
I Built an AI 3D Model Generator — Here's How I Handle Meshes in the Browser
I shipped www.imgto3d.ai a few months ago. It's an AI-powered 3D model generator : you upload an image, pick a generator (upscale, denoise, face recov…
What Nanochon's Series A Tells Us About the Bio 3D Printing Commercialization Threshold
A $2,000 Implant and a Multi-Million Dollar Question In early 2025, Nanochon closed a Series A round to commercialize its 3D-printed cartilage scaffol…
I Built a Browser-Based 3D Print Overhang Analyzer — No Backend, No Uploads
Last week I released SupportSage, a CLI tool that analyzes STL geometry and generates optimized support structures. The response was great, but there …