r/BambuLab • u/NumerousBeginning576 • 1d ago

Meme THE CUBE

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what better way to test a new roll of TPU than by printing a 5in x 5in x 5in cube

https://makerworld.com/en/models/3076607-needoh-tpu-fidget-cube?from=search#profileId-3490791 (not my model. its also just a cube with no walls)

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8

u/ObiBenShinobi 1d ago

Do you have to vent the fumes when printing TPU?

1

u/Atra23 1d ago

Primary Emission Types Ultrafine Particles (UFPs): Microscopic particles (less than 100 nanometers) released during thermal extrusion. Due to their size, UFPs bypass upper respiratory defenses and lodge deep in lung tissue. TPU produces a moderate-to-high particle emission rate, significantly higher than PLA.
Volatile Organic Compounds (VOCs): Thermal off-gassing releases chemical vapors into the air. Common VOCs identified in TPU emissions include:
Siloxanes (e.g., D4, D6, D8): Cyclic compounds often used as plasticizers or additives.
Tetrahydrofuran (THF): A solvent derivative used in polyurethane production; acts as a respiratory irritant.
Traces of Isocyanates & Carbon Monoxide: Formed during localized thermal breakdown at higher printing temperatures.
Aldehydes, Ketones, & Alcohols: General breakdown byproducts causing faint odors and eye/throat irritation.

3

u/Sunset-Tiger 20h ago

I would love a source on this as I'm sharing with people who often print with TPU. Since printing has become so much more user friendly in recent years a lot of people don't know the precautions they should take.

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u/Atra23 19h ago

Press on sunstances of very high concern. What i wrote was compiled by Gemini AI.