Material
PETG
Printer
Bambu X1C

Short answer

The Bambu X1C is the flagship of the line, and it prints PETG best at a 240 to 250 C nozzle and a 70 to 90 C bed, with low part cooling and a short retraction. The X1C is fast, all-metal, and self-leveling, so the hard part is the filament: PETG strings when wet, so dry it first. These numbers give a clean first print.

01 Starting PETG settings for the X1C

These numbers suit a stock Bambu X1C with the direct-drive extruder. The nozzle and bed values track Bambu’s PETG guide and the PETG datasheets. The retraction and speed tuning are Marqilo starting points for the X1C. Dry the PETG first, since wet spools string on this fast printer.

Starting PETG settings for a Bambu X1C
SettingRecommendedWhy
Nozzle temp240 to 250 C240 C is a safe start; 250 C for faster speeds. The X1C hot end handles the full PETG range.
Bed temp70 to 90 C80 C gives strong grip on the textured PEI.
Retraction0.4 to 0.6 mmDirect-drive baseline. Tune within 0.4 to 0.6 mm for stringing.
Part coolingOff, then 30 to 50%Off for the first 2 to 3 layers, then 30 to 50 percent. PETG weakens under full cooling.
First layer240 C, 80 C bed, 20 mm/sSlow and warm, so the PETG bonds to the sheet.
Print speed80 to 200 mm/sMarqilo starting point. The X1C prints PETG fast; slow the outer walls for finish.

02 How to adjust PETG settings

  1. Dry the PETG

    Run the spool at 60 to 65 C for 4 to 8 hours, then print from the AMS or dryer.

  2. Set the temperatures

    Nozzle to 240 C and bed to 80 C is a safe start that melts PETG clean on the X1C.

  3. Keep cooling low

    Run the part fan off for the first 2 to 3 layers, then 30 to 50 percent.

  4. Tune retraction

    Start at 0.5 mm. If strings appear, step toward 0.6 mm.

03 What goes wrong

Most failed PETG prints on the X1C trace to wet filament and full cooling. Wet PETG strings and prints cloudy, so dry the spool. Full part cooling weakens the layers, so cap it at 30 to 50 percent. A nozzle too cool under-extrudes at speed, which clears when you lift it toward 250 C. The PETG stringing guide covers the hairs.

Frequently asked

What PETG nozzle temp for the Bambu X1C?
240 to 250 C. Start at 240 C and move to 250 C at higher speeds. The all-metal hot end handles the full PETG range.
Does the X1C need the chamber open for PETG?
Not usually. PETG warps less than ABS. At a bed near 90 C, use the lid spacer to vent a little, but you rarely need to open the door.
What bed temp for PETG on the X1C?
70 to 90 C. 80 C is a safe default that grips the textured PEI without overheating the chamber.

For the material side, the PETG hub explains the filament in depth, and the filament storage guide covers keeping spools dry.

Related guides

Related

Cross-reference

Sources & methodology

5 citations · reviewed 2026-07-10
  1. 01Bambu Lab PETG Usage Guide (wiki): PETG drying and flowaccessed 2026-06-29Tier 1
  2. 02Bambu Lab Wiki: Printing wet or undried PETG (drying)accessed 2026-07-09Tier 1
  3. 03Bambu Studio Wiki: print and material settingsaccessed 2026-06-29Tier 1
  4. 04Prusament PETG Technical Datasheet (TDS PDF): nozzle, bed, fan, speedaccessed 2026-06-29Tier 1
  5. 05Polymaker PETG Technical Data Sheet (TDS V2.0 PDF): nozzle, bed, dryingaccessed 2026-06-29Tier 1
How we vetted this: every claim traces to a tiered source, Tier 1 (manufacturer, slicer, standards) first. Read the full sourcing and conflict-of-interest policy.