- A member wants to 3-D-reconstruct a complex playground before it is demolished; the structure contains bridges, twisting staircases, and many small spaces, so the plan is to capture hundreds of still photos with a tripod rather than rely on video (concern: motion blur).  
- NeuralRecon (ZJU3DV) and PanoRecon (CVPR 2024) were recommended as state-of-the-art SLAM/neural-reconstruction pipelines that work from monocular video, but the original poster dismissed them as too academic and time-consuming.  
- Practical open-source alternatives discussed include AliceVision/Meshroom, Jawset, and Hyper3D.ai; all were reported to be either hard to install, crash-prone, or to produce overly smoothed, symmetry-forced meshes lacking fine detail.  
- One participant resurrected a Revopoint handheld 3-D scanner (0.13 mm accuracy) and demonstrated that its raw output, despite messy overlapping “skin layers,” is far more accurate for face/head scanning than any AI photogrammetry tested; the main hurdle is that the vendor software is Windows-only and must be run under Wine.  
- The same user plans to use the high-resolution face mesh for custom mask design and 3-D printing, noting that hair must be covered during scanning to capture skull geometry and that heavy retopology is required because decimation alone cannot resolve the scanner’s slice misalignments.  
- A link to DirtyPCBs.com, a low-cost PCB/proto manufacturing service tied to Hackaday, was shared as a general resource for open-hardware projects.