Fiberglass Filament

Inexpensive and 11 times stiffer than ABS, fiberglass is the perfect entry-level fiber for 3D printing.

3.5 kg (7.5 lb) hung from fiberglass-reinforced Onyx, Onyx, ABS, and PLA beams.


Flexural stiffness

3D printed fiberglass is 11x more rigid than ABS and 26x more rigid than nylon.

0,84 (GPa)
2,1 (GPa)
2,9 (GPa)
22 (GPa)

Flexural strength

In three-point bending 3D printed fiberglass is 3.5x stronger than ABS and 7x stronger than nylon.

32 (MPa)
58 (MPa)
84 (MPa)
210 (MPa)


When To 3D Print With Fiberglass Material

Use fiberglass composite material to print parts that are an order of magnitude stiffer than typical 3D printed objects at the most affordable price.

  • Functional prototypes
  • Fixtures
  • Jigs
  • End use parts


What is fiberglass material?

Extremely thin strands of glass bundled together into a fiber. Fiberglass is traditionally used in composites for boat, automobile, and aircraft manufacture.

How strong is fiberglass?

Fiberglass has a flexural strength of 210 MPa (30.5 ksi) and a tensile strength of 590 MPa (85.5 ksi). For more information on 3D printed fiberglass material properties, check out the data sheet.