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Exactly. Plus the parameters of the temp, direction its printed, layer height every can change how that part will absorb the impact. I have to print my mounts 30° above recommend temps because during testing under hard impact it would split on Layer lines.Absolutely agree that 3d-printed wing mount is the best. We are using TPU-filament for long parallel parts and PETG to attach them to rear shock mount. According to rule of engineering you must absorb damage by some of cheapest parts of constructions instead of resist it. The main task is to protect the most valuable parts. Flexing material does this work perfectly. TPU has an excellent ability to bending and unbending.