In a physical context, "Armorsmith crack" can also refer to the propensity for folded paper or 3D printed armor to fracture along the fold lines or stress points generated by the software’s unfolding logic. Both issues stem from the same root cause: the translation of complex digital curves into flat, buildable planes.
Literally no one. If you can afford a 3D printer or EVA foam, you can afford $20. If you genuinely cannot—message the developer. Small indie tool makers (and Armorsmith is a tiny team) often give out hardship licenses if you explain your situation. I've seen it happen.
: Users sometimes encounter a "blank page" when hitting the pattern layout; this is often due to the model not being properly unfolded or selected within the software.
However, 3D models are rarely perfect. They often contain non-manifold geometry, holes, or overlapping vertices. When Armorsmith attempts to flatten these imperfect meshes, the algorithm can struggle. The result is a "crack"—a visible gap, split, or disconnection in the 2D pattern that does not exist (or shouldn't exist) in the original 3D model.