Glass-filled Nylon vs PETG
Compare Glass-filled Nylon and PETG filaments side-by-side. See which one is best for your 3D printing project.
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
Property
Glass-filled Nylon
PETG
Tier Rating
Tier S
Tier A
Family
Nylon (PA)
PETG
Nozzle Temp
260-290°C
215-270°C
Bed Temp
80-100°C
70-90°C
Enclosure
required
optional
Cooling
Low cooling
Moderate cooling; too much cooling can hurt layer adhesion
Moisture Sensitivity
very high
moderate
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
Frequently Asked Questions
Is Glass-filled Nylon or PETG better for 3D printing?
Glass-filled Nylon is generally rated higher (Tier S) compared to PETG (Tier A). However, the best choice depends on your specific needs: Glass-filled Nylon is best for Massively stiffer/tougher/more heat & abrasion resistant than nylon, while PETG is best for Tougher than PLA, higher temp tolerance, more durable in real-world use.
What are the temperature differences between Glass-filled Nylon and PETG?
Glass-filled Nylon prints at 260-290°C nozzle / 80-100°C bed. PETG prints at 215-270°C nozzle / 70-90°C bed.
Do Glass-filled Nylon and PETG need an enclosure?
Glass-filled Nylon: required. PETG: optional.
Which is more beginner-friendly: Glass-filled Nylon or PETG?
PETG is more beginner-friendly as it doesn't require an enclosure.