Bambu Lab PETG HF
Manufactured by Bambu Lab
Quick Summary
PETG usually asks you to choose between speed and surface quality. Bambu’s high-flow PETG mostly removes the choice: it melts fast enough to keep a modern CoreXY fed at speeds where standard PETG starts under-extruding, and it strings less than most spools on the shelf. Print window is 230-260 °C with a 65-75 °C bed, and the material is worth the extra over commodity PETG if you print functional parts in volume.
Print Settings That Work
Start at 250 °C nozzle, 70 °C bed, cooling around 40%. The data sheet allows 0-60% cooling and speeds under 300 mm/s, and both ends of that range are usable rather than aspirational.
Dry first. Bambu’s own guidance is 65 °C for 8 hours, or 75-85 °C for 12 hours on the printer’s heatbed, and storage under 20% RH. This is the single largest factor in whether a PETG print looks glassy or hairy, larger than any retraction tweak.
On smooth PEI, use a slightly larger first-layer gap or a release agent. PETG bonds to PEI enthusiastically, and a well-squashed first layer can take plate coating with it.
Print Quality
Layer adhesion is excellent. Parts fail by bending and tearing, not by splitting along a layer, which is the property that makes PETG worth printing in the first place. Surfaces come out glossy with even colour, and overhangs hold better than expected for a material running low cooling.
Stringing is present but mild by PETG standards, especially straight from a sealed bag. Dimensional accuracy is good; holes come out a fraction undersize as PETG always does, so add 0.1-0.2 mm on press-fits.
Where It Falls Short
The price is Bambu’s price: comfortably above eSUN or Overture for the same nominal material. Outside a Bambu printer you lose the RFID convenience that justifies part of it.
Like all PETG, it welds to itself, so same-material supports are a chore, and it stays sensitive to moisture across the life of the spool rather than only before the first print.
Verdict
If a part has to hold a load, live outdoors, or sit near heat, PETG HF is the version of PETG least likely to waste your time. Buy budget PETG for volume and shelf brackets, Prusament for the finest surfaces, and this when speed and reliability are what you are paying for.
- Bambu Lab PETG HF vs polylite petg — PolyLite is the printer-agnostic pick and slightly cheaper; PETG HF prints faster and strings less, and the RFID tag pays off inside an AMS.
- Bambu Lab PETG HF vs prusament petg — Prusament holds tighter tolerance and has the nicer finish; Bambu PETG HF is the one to run when you care about print time.
- Bambu Lab PETG HF vs esun petg — eSUN is half the price and perfectly usable once dried; PETG HF is the upgrade when failures cost more than filament.
What temperature should I print Bambu PETG HF at?
The data sheet gives 230-260 °C at the nozzle with a 65-75 °C bed on smooth or textured PEI. 250 °C and 70 °C is a solid default; the high-flow formulation keeps up at speeds where ordinary PETG under-extrudes.
Do I need to dry Bambu PETG HF?
Bambu says yes, and the data sheet is specific: 65 °C for 8 hours in a dryer, or 75-85 °C for 12 hours on an X1 heatbed. Store below 20% RH sealed with desiccant. Wet PETG strings and loses gloss.
What makes PETG HF different from regular PETG?
The HF formulation melts faster, so it keeps volumetric flow up at high print speeds. On a fast CoreXY that means the same surface quality at 200+ mm/s that regular PETG only manages at half the speed.