Why Do Letters Fall Out of My Laser-Cut Sign?

Letters with closed interiors (A, B, D, O, P, Q, R, and lowercase a, b, d, e, g, o, p, q) all have counters. The number of counters varies — B has two, A has one. Lazrit's island detector finds every counter regardless of font.

Design apps don't understand 'cuttable'. They see a path; they draw a path. Whether that path will produce a piece that survives gravity isn't something Illustrator, Inkscape, or Affinity Designer check for. That validation has to happen with the cut workflow in mind — which is what Lazrit does.

The classic fix is to use a 'stencil font' that has bridges built into every counter. The Lazrit fix is to use any font you want and let auto-bridge handle the counters. Auto-bridge uses material-aware widths (1 mm on mylar, 2 mm on wood, 2.5 mm on acrylic) and places bridges in least-visible spots.

When the letters are holes in a field (rather than the field being holes around the letters), every letter becomes an island that needs a bridge. This is the reversed-out / knockout case — see the dedicated reversed-out-text tool for the workflow.