StitchDiag - Photo-led sewing troubleshooting

StitchDiag helps ordinary home sewing machine users troubleshoot visible stitch problems without jumping straight to unsafe repairs. Users upload photos of the front and back of one controlled test seam. The service presents up to three possible causes, explains supporting and conflicting evidence, and suggests one safe next check. It clearly stops for electrical smells, heat, metal strikes, hard jams, industrial machines, and internal mechanical work. The public diagnostic flow and safety guides are currently free.