CC3D PCTG vs PETG: Is the Upgrade Actually Worth It?

The Filament Test That Settles the PCTG Debate

CC3D recently put its transparent PETG and PCTG filaments head to head in a detailed side-by-side test. My Tech Fun ran the comparison, measuring print performance, shrinking, strength, layer adhesion, and impact resistance. The results give buyers a clearer answer on whether the pricier option pays off.

PCTG and PETG are both glycol-modified polyesters. The difference comes down to the specific glycol used in the polymer chain. PCTG swaps in a different modifier that improves impact resistance and chemical resistance. It also prints with better surface quality and clarity, and it absorbs moisture more slowly. Print temperatures and difficulty remain almost identical to standard PETG.

In the test, the CC3D PCTG held up better under stress. Parts printed in PCTG resisted cracking when subjected to impact loads. PETG parts showed the brittleness that many users report after repeated handling or drops. Layer adhesion was comparable between the two, so you are not sacrificing print reliability for toughness.

The catch is price. PCTG costs noticeably more per kilogram. If your prints sit on a shelf and rarely get knocked around, PETG is still the sensible default. If you print functional parts, enclosures, or anything that might take a hit, the upgrade to PCTG makes sense. The test suggests you are paying for real durability, not marketing.