What nozzle and bed temperatures does PETG need?

Most PETG prints around 230-250°C at the nozzle with a bed near 70-80°C. Start in the middle and adjust for your printer and part cooling.

Is PETG better than PLA for functional parts?

Yes for parts that take load, heat or sunlight. PLA is stiffer and easier to print but softens at lower temperatures and is more brittle.

PETG absorbs moisture, which causes popping and rough surfaces. Dry spools if prints bubble or string badly, and store them sealed with desiccant.

PETG can bond too strongly to smooth PEI or glass. Use a release agent or a textured sheet, and let the part cool fully before removing it.

1.75 mm is the standard for most desktop printers. Check your printer's spec; older machines may use 2.85 mm.

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