Metal-filled PLA vs TPU
Compare Metal-filled PLA and TPU filaments side-by-side so you can pick the right one for your 3D printing project.
Metal-filled PLA vs TPU: Metal-filled PLA is known for hefty, while TPU is known for excellent layer adhesion. Both have no enclosure requirements; Metal-filled PLA is less moisture-sensitive; TPU prints at higher nozzle temperatures (200-240°C vs 190-220°C). Choose Metal-filled PLA for hefty, or TPU for excellent layer adhesion.
Key differences at a glance
Metal-filled PLA
FPLA + metal shavings
Hefty, can show metal-like properties (patina/polish/magnetism)
TPU
SThermoplastic Polyurethane
Excellent layer adhesion; extremely impact resistant; highly durable
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
Metal-filled PLA Strengths
- Hefty, can show metal-like properties (patina/polish/magnetism)
TPU Strengths
- Excellent layer adhesion; extremely impact resistant; highly durable
- Great for combat robots, tactical/rough-use parts
- Rubber-like parts (gaskets, grips, bumpers, wheels)
Considerations
Metal-filled PLA Caveats
- Weaker than regular PLA
- Very brittle on/off spool
- Very expensive and higher density means fewer prints per spool
- Usually better replaced by paint/inserts/electroplating
TPU Caveats
- Slow printing; retraction can cause jams (especially in Bowden setups)
- Stringing is common
- Very moisture sensitive; wet TPU prints poorly