Glass-filled Nylon vs PETG
Compare Glass-filled Nylon and PETG filaments side-by-side so you can pick the right one for your 3D printing project.
Glass-filled Nylon vs PETG: Glass-filled Nylon is known for massively stiffer/tougher/more heat & abrasion resistant than nylon, while PETG is known for tougher than pla. PETG is easier to print; Glass-filled Nylon prints at higher nozzle temperatures (260-290°C vs 230-250°C). Choose Glass-filled Nylon for massively stiffer/tougher/more heat & abrasion resistant than nylon, or PETG for tougher than pla.
Key differences at a glance
Glass-filled Nylon
SPA-GF / GFPA
Massively stiffer/tougher/more heat & abrasion resistant than nylon
PETG
APolyethylene Terephthalate Glycol-modified
Tougher than PLA, higher temp tolerance, more durable in real-world use
Detailed Comparison
Green marks the generally easier or more forgiving option in that row, based on tier, enclosure needs, and moisture sensitivity. It is not always the better choice for a specific job, so weigh it against what your project actually needs.
Strengths Comparison
Glass-filled Nylon Strengths
- Massively stiffer/tougher/more heat & abrasion resistant than nylon
- Warping reduced enough to be fairly easy to print (with correct setup)
- Viable alternative to machined aluminum for some parts
PETG Strengths
- Tougher than PLA, higher temp tolerance, more durable in real-world use
- Good clarity and low friction among easy-to-print materials
Considerations
Glass-filled Nylon Caveats
- Higher print temps; hardware wear if not equipped
PETG Caveats
- Overhangs/bridges sag; supports can be hard to remove
- Absorbs water fairly quickly