Material Analysis
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PETG product surface hardness test low
Fenómeno del problema
The pencil hardness test is lower than expected (below HB), easily scratched.
Análisis de la causa
No surface hardening treatment after molding, the raw material grade itself is soft in hardness.
Solución
Use high-hardness PETG grades; treat the product surface with UV hard coating or silicon hard coating.
Conclusión clave
PETG surface hardness can be improved by coating.
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