Why a successful print is not the same as a validated functional part
A printed part is not automatically a working part.
Visual success confirms geometry, not performance.
Short answer
Printing creates shape. Validation confirms function.
Why prints fail in real use
Hidden structural weaknesses
- Incomplete curing
- Weak interlayer bonding
- Residual stresses
- Poor post-curing response
Geometry amplifies failure
Thin walls, sharp transitions and stress concentration zones can expose weaknesses that are not visible in simple test prints.
Engineering validation
From print to function
Parts must be validated under real conditions: load, environment, repetition and time.