Hackaday · Maken

PETG vs. PCTG 3D Printing Filaments

A comparison between PETG and PCTG 3D printing filaments highlights their distinct properties and potential applications. Both are glycol-modified PET, but PCTG has a higher proportion of CHDM monomers, leading to significant differences.

PETG is created by replacing some glycol monomers with CHDM monomers in PET, resulting in a more flexible and robust material. PCTG, on the other hand, replaces more than half of the glycol monomers with CHDM, giving it unique physical characteristics.

PCTG exhibits greater ductility and impact resistance compared to PETG. However, it requires higher printing temperatures, similar to ASA presets. Despite the higher temperature requirement, PCTG's flexibility and resistance to higher temperatures and impact make it a suitable choice for demanding environments, potentially serving as an alternative to ASA.

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