PETG is one of the most capable everyday filaments — stronger than PLA, far easier to print than ABS, and resistant to heat, moisture, and UV. Getting the settings right makes PETG a pleasure to print. This guide covers the complete settings reference, how to tune each parameter, and how to fix every common PETG problem.
PETG Print Settings — Quick Reference
Nozzle Temperature: 230–250°C (240°C starting point)
Bed Temperature: 80–90°C
Print Speed: 30–50 mm/s standard | up to 300 mm/s with new Overture PETG formula
Cooling Fan: 30–50% after first 3 layers (not 100%, not off)
Retraction (Bowden): 4–6mm at 45–60 mm/s
Retraction (Direct Drive): 1–2mm at 45 mm/s
First Layer Speed: 15–20 mm/s
Drying: 65°C for 7 hours before printing after extended storage
PETG Nozzle Temperature — How to Dial It In
The recommended PETG print temperature is 230–250°C. Start at 240°C for your first print on a new spool or printer. Adjust based on what you observe:
• Poor layer adhesion, gaps in walls, or under-extrusion → increase by 5°C
• Excessive stringing, rough surface, or oozing at the nozzle → decrease by 5°C
• Perfect surface but brittle layers → check cooling fan (may be too high) or dry filament
The most reliable calibration method is a temperature tower — a test print that changes nozzle temperature every 5–10mm in height. Print one with your specific spool and select the temperature that gives the best combination of smooth surface and strong layer bonding. Different colors and batches of PETG can have slightly different optimal temperatures even from the same brand.
PETG Bed Temperature — What Works and What Damages Your Bed
PETG requires a bed temperature of 80–90°C for reliable first-layer adhesion. Unlike PLA, PETG can bond so aggressively to some bed surfaces that removing the print damages the surface — bare borosilicate glass is the most common victim, where PETG can pull chunks of glass out of the bed during removal.
PEI smooth sheet: The best all-around PETG surface. Excellent adhesion at 80–90°C, releases cleanly and completely once cooled to room temperature. Never remove a PETG print from a warm PEI bed — let it cool fully first.
PEI textured sheet: Strong adhesion with a natural matte texture on the bottom layer of your print. Slightly more aggressive release than smooth PEI; also releases cleanly when cool.
Bare glass: Avoid for PETG without a release agent. PETG bonds so strongly to clean glass that the print may not release, or may pull glass chips. If using glass, apply a thin layer of glue stick as a release agent.
BuildTak / generic flex plates: Results vary by brand. Test with a glue stick release agent first.
Pro tip for new PEI sheets: if PETG is bonding too aggressively, the PEI surface is still very fresh. A very light application of glue stick acts as a release agent without affecting adhesion. As the sheet ages slightly, the adhesion becomes less aggressive.
PETG Cooling Fan — Why Moderate Cooling Matters
PETG occupies a specific sweet spot between PLA (which benefits from maximum cooling) and ABS (which needs zero cooling). Running 100% cooling fan on PETG causes the layers to cool too fast, resulting in poor interlayer bonding, brittle prints, and sometimes visible delamination on layer lines. Running no cooling fan causes droopy overhangs and worse stringing.
The correct setting is 30–50% fan speed after the first 2–3 layers. Turn the fan completely off for the first two layers to ensure strong bed adhesion, then ramp up to 30–50% for the remainder of the print.
For very tall prints or parts with small features that need to solidify between layers, you can increase to 60–70% for those specific sections while keeping lower fan speeds elsewhere.
PETG First Layer Settings
Getting the PETG first layer right requires slightly different settings than PLA:
First layer height: 0.2–0.3mm — PETG flows well, so a slightly thicker first layer improves bed contact
First layer speed: 15–20 mm/s — slower first layer allows PETG to settle properly and bond to the bed
First layer extrusion multiplier: 1.05–1.10 — slight over-extrusion on the first layer ensures full bed contact
Z offset: PETG generally needs the nozzle set slightly higher than PLA — if PETG cannot be removed without force, raise the Z offset slightly on your next print
Fan: Off for the first 2–3 layers
PETG vs PLA — When to Choose Each
Choose PETG when any of the following are true:
• The print will be exposed to temperatures above 60°C (PETG softens at 85°C vs PLA at 64°C)
• The part will be used outdoors with UV exposure
• You need higher impact resistance or toughness
• The part will contact moisture, chemicals, or cleaning products
• You need food-adjacent applications (note: no filament is certified food-safe for functional use without food-safe coatings)
Choose PLA when print speed, ease of settings, color selection, or lower temperature requirements are the priority. Overture PLA Filament offers 34+ colors, faster print speeds, and simpler settings for everyday printing.
For functional parts that need the toughness of PETG without stringing, Overture PLA Professional is 5x tougher than standard PLA and prints like standard PLA.
PETG Troubleshooting — Common Problems and Fixes
Stringing: Reduce temperature to 230–235°C, increase retraction speed to 60 mm/s, enable Wipe Before Travel, dry the filament. See our full stringing guide for step-by-step fixes.
Brittle layer adhesion: Increase print temperature by 5°C, reduce cooling fan to 30%, ensure filament is fully dry.
First layer not sticking: Increase bed temperature to 85–90°C, clean bed with 99% IPA, verify Z offset, slow first layer to 15 mm/s.
Print impossible to remove from bed: Let the bed cool to room temperature before attempting removal. Apply glue stick as release agent on next print.
Bubbles or foam texture on surface: Dry the filament — this is almost always caused by moisture. Dry at 65°C for 7 hours.
Elephant foot (first layer too wide): Raise Z offset by 0.05mm, reduce first layer extrusion multiplier to 1.0.
Warping on large prints: Increase bed temperature to 90°C, add a brim in your slicer, ensure no drafts from fans are hitting the print.
Frequently Asked Questions
What is the best bed temperature for PETG?
The best PETG bed temperature is 80–90°C. Start at 85°C as a universal starting point. If you experience first-layer adhesion problems, increase to 90°C and verify your Z offset is correct. If prints are bonding too aggressively to the bed and are difficult to remove, reduce to 80°C and apply a thin layer of glue stick as a release agent. Never attempt to remove a PETG print from a hot bed — always let the bed cool to room temperature first.
What speed can PETG print at?
Standard PETG prints reliably at 30–50 mm/s on most printers. The new Overture PETG formula supports speeds up to 300 mm/s on high-flow setups (direct drive with a volcano or CHT nozzle, adequate cooling), with Z-tensile strength improved by over 17% and impact strength increased 4x to maintain quality at higher speeds. For standard printers without high-flow modifications, 30–50 mm/s remains the recommended range.
Is PETG stronger than PLA?
PETG has better impact resistance, elongation before break, and toughness than standard PLA, making it better for parts subject to impact or flexing. Standard PLA has higher stiffness and is less prone to creep under sustained load. For maximum strength in a PLA-like material, PLA Professional (5x tougher than standard PLA) or Super PLA+ (12x tougher) are better choices than switching to PETG. PETG's primary advantage over PLA is heat resistance (85°C vs 64°C) and chemical/moisture resistance, not raw strength.
Does PETG need an enclosure?
No — PETG does not require an enclosure for most prints. PETG has low warping tendency and prints well on open-frame printers like the Ender 3 or Prusa MK4. An enclosure may help marginally for very large prints in cold rooms, but it is not necessary. Unlike ABS, there is no meaningful benefit to containing the heat for typical PETG prints.
Can PETG be used for outdoor prints?
Yes — PETG has good UV and weather resistance, making it suitable for garden tools, outdoor fixtures, automotive components, and items exposed to sun and rain. For extreme or prolonged UV exposure, ASA provides even stronger UV stability. Both materials outperform PLA in outdoor environments, where PLA can warp and degrade within weeks of UV exposure.
Overture ASA Filament is specifically designed for long-term outdoor use with maximum UV stability.
