Beware! 3-D Printers Could be Toxic to Our Health and Environment

by Dr. Trupti Shirole on Nov 6 2015 5:29 PM

 Beware! 3-D Printers Could be Toxic to Our Health and Environment
A report by global market analysis firm Canalys revealed that the value of the 3D printing market grew from $288 million in 2012 to $2.5 billion in 2013 and is projected to grow to $16.2 billion by 2018. Amid the soaring popularity of 3D printers, a new research has revealed that some objects produced by commercial 3D printers could be toxic to our health and environment.
William Grover, assistant professor of bioengineering in Bourns College of Engineering at University of California - Riverside, US, said, "These 3D printers are like tiny factories in a box. We regulate factories. We would never bring one into our home. Yet, we are starting to bring these 3D printers into our homes like they are toasters."

The scientists studied two common types of 3D printers- one that melts plastic to build a part, and another that uses light to turn a liquid into a solid part. They found that parts from both types of printers were measurably toxic to zebrafish embryos, and parts from the liquid-based printer were the most toxic.

The study said, "As the price of 3D printers continues to drop - printers that use melted plastic are currently available for as little as $200, and the liquid-based printer used in this study can be bought for less than $3,000 - they are moving beyond industry and research labs to homes and small businesses."

While the zebrafish embryos exposed to parts from the plastic-melting printer had slightly decreased average survival rates compared to control embryos, the embryos exposed to parts from the liquid-resin printer had significantly decreased survival rates, with more than half of the embryos dead by day three and all dead by day seven. And of the few zebrafish embryos that hatched after exposure to parts from the liquid-resin printer, 100% of the hatchlings had developmental abnormalities.

These results raise questions about how to dispose off parts and waste materials from 3D printers.

The findings appeared in the Environmental Science & Technology Letters.