PETG Filament: Product-Specific Settings and Build-Surface Checks

PETG formulations, printers, and build surfaces differ. Start with the exact spool and printer profile; the numbers below are one documented Prusa workflow, not a universal PETG prescription.

Documented Prusa starting point

Prusa lists 230 °C for the first layer and 240 °C for later layers, with an 85 °C first-layer bed and 90 °C thereafter. Those values apply to Prusa's PETG guidance. Do not transfer them blindly to another product or hotend.

Build-surface compatibility

Prusa warns that PETG can bond too strongly to smooth PEI. For its sheets, it recommends a powder-coated or satin surface, or a thin PVA separation layer on smooth PEI. Follow the instructions for your own plate.

Practical sequence

1. Select the printer maker's PETG profile and the spool maker's range.
2. Confirm that the plate is compatible with PETG.
3. Print a small first-layer check and temperature calibration.
4. Record the product, nozzle, plate, temperatures, cooling, and result.

Sources

• Prusa PETG material guide
• Prusa print-surface preparation