PLA
Biodegradable thermoplastic with good stiffness and surface finish. PLA is the easiest FDM material to print and ideal for concept models and visual prototypes.
About PLA
PLA (Polylactic Acid) is a biodegradable thermoplastic derived from renewable resources (corn starch, sugarcane). It is the easiest FDM material to print, offering excellent surface quality, dimensional accuracy, and a wide range of available colors.
FabRapid prints PLA for concept models, visual prototypes, architectural models, and design verification. PLA parts look professional and are suitable for non-functional display purposes, but should not be used for structural, mechanical, or outdoor applications due to limited temperature resistance (HDT 52°C) and brittleness.
PLA is environmentally friendly and can be composted in industrial facilities. However, it is not biodegradable in home composting conditions or normal landfill environments.
Material Properties
Compatible Manufacturing Processes
PLA can be processed using these manufacturing methods.
Available Surface Finishes
Surface treatments compatible with PLA.
Common Applications
Design Guidelines for PLA
PLA is ideal for visual prototypes — take advantage of its excellent surface quality
Avoid applications above 50°C — PLA softens and deforms near its glass transition temperature
Minimum wall thickness: 1.0 mm for standard FDM printing
PLA is brittle — not suitable for snap-fits, living hinges, or impact-prone applications
PLA FAQ
PLA has decent tensile strength (50 MPa) but is brittle with low elongation (6%). It is not suitable for functional parts that experience impact, sustained load, or temperatures above 50°C. For functional FDM parts, use ABS, PETG, or nylon instead.
PLA itself is food-safe. However, FDM-printed PLA parts have microscopic layer lines that trap bacteria and are difficult to clean. For food-contact 3D printing, use food-safe PETG with appropriate nozzle and build surface materials.
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