FDM – PLA 3D Printing Material

PLA 3D printing material (Polylactic Acid) is a widely used thermoplastic in the world of 3D printing due to its low cost, ease of use, and decent mechanical properties. While not suitable for demanding functional parts, PLA excels in aesthetic prototypes, conceptual models, and low-load applications. It prints with minimal warping and is a great option for larger builds or projects that require visual clarity without post-processing.

Key Material Facts:

• Lightweight & Rigid: PLA 3D printing material offers good dimensional accuracy and stiffness
• Biobased: Derived from renewable resources like corn starch and sugarcane
• Low Warping: Very low thermal expansion makes it ideal for visual models
• Easy to Print: Excellent first-layer adhesion and minimal shrinkage
• Many color options available: The material can be sourced in a wide range of color options including clear
  • Clear parts allow light to pass through them but are frosted like a milk jug so they do not work for optical lenses. See the gallery at the bottom of the page for examples of clear PLA parts.

Common Applications:

• Concept models and mock-ups
• Fit-check and assembly jigs
• Light-duty brackets and spacers
• Visual aids and marketing prototypes
• Cosplay props and hobby parts
• Low heat lighting covers

Color Options:

We stock PLA 3D printing materials in a variety of colors (and clear) suitable for visual prototypes and presentation models. If we do not stock the color you are looking for we can order it in from a supplier within 2-3 days.

Design Considerations:

• We only run PLA on our small desktop FDM print farm so you are limited to parts that are 13.38″ x 12.59″ x 13.38″ in size in this material. If you need a bigger part we can run it on our large frame FDM machines in something like ABS or PC-ABS.
• PLA is brittle relative to other FDM plastics—avoid use in impact-heavy or load-bearing parts.
• Not suitable for high-temperature environments or outdoor use.
• Ideal for thin-walled or visually complex models that require crisp detail.

Frequently Asked Questions about PLA 3D Printing Material

What is PLA used for in 3D printing?

PLA is commonly used for visual prototypes, concept models, cosplay props, and hobby parts. It’s ideal for projects that don’t require high strength or heat resistance.

Is PLA strong enough for functional parts?

PLA has good stiffness but low impact resistance and heat tolerance, making it suitable for light-duty, non-functional parts. For functional parts, materials like ABS or Nylon are better choices.

What temperature does PLA start to deform?

PLA typically softens around 55°C (131°F), making it unsuitable for parts exposed to heat, like in a car or near electronics.

How does PLA compare to ABS?

PLA is easier to print and more dimensionally accurate, but ABS is stronger, more durable, and better suited for functional parts. PLA is preferred for visual models and beginners.

Material Reference Data:

• For more information on how the FDM printing process works please check out this page.
• For general FDM part design trick and tips check out this page.

---

FDM – PLA: Technical Specifications

Mechanical Properties for PLA 3D printing material

Property Description	Testing Method	Measurement
Tensile Strength, Break	ISO 527	56 MPa
Tensile Elongation, Break	ISO 527	8%
Flexural Modulus	ISO 178	3185 MPa
Heat Deflection Temperature at 0.45 MPa (66psi)	ISO 75	80°C
Glass Transition Temperature (Tg)	DSC	55°C
Density	ISO 1183	1.24 g/cc
Surface Resistance	ASTM D257	1013 Ohm/sq

Full material spec spec sheet can be downloaded here.

---

FDM – PLA: Part Gallery

Full Rocket Testing Video can be found here