3D technology is transforming traditional trades like locksmithing. It allows creating lost keys without needing the original, simply by scanning the lock or using high-resolution photographs. This reduces waiting times and avoids having to disassemble entire cylinders, streamlining the professional's daily work.
Key digitization and part design 🔧
To scan a key, programs like Blender or MeshLab are used to process the point cloud, and CAD software such as Fusion 360 or FreeCAD to refine the model. The process involves photographing the key from multiple angles, generating a 3D model through photogrammetry (using tools like RealityCapture), and then printing it on a resin printer. The margin of error is typically less than 0.1 mm, enough to open common locks.
The day I printed the neighbor's key 😅
A colleague tried to scan his garage key with his phone and a desk lamp. The result was a piece that looked more like a twisted churro than a key. When testing it, the lock didn't budge, but the print fit so tightly that they had to call a real locksmith to remove it. Since then, he says 3D printing is great, but only for making decorative keychains.