Troubleshooting

Separate source-sheet gaps from font spacing, test real words, adjust shared metrics, and replace badly cropped glyphs without chasing every pair.

Trace jagged glyphs back to blur, tiny source letters, paper noise, threshold clipping, and missing detail before recapturing or replacing samples.

Use contrast and ink threshold for different jobs, preserve thin strokes, avoid paper noise, and know when a handwriting photo needs recapturing.

Repair missing characters, duplicate labels, paper-noise cells, and weak glyph samples before rebuilding a handwriting font.

Diagnose unsupported files, blur, low contrast, paper noise, touching letters, and threshold settings when a font maker finds no usable cells.

Stop ruled notebook lines from becoming glyph strokes by recapturing on plain paper or using careful crop, contrast, mapping, and proofing steps.

Diagnose touching handwriting, threshold mergers, cursive joins, and crop problems before replacing or rebuilding connected glyphs.

Use a repeatable preview checklist for coverage, repeated letters, spacing, punctuation, numbers, and real project text before exporting a TTF.