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MIT’s new MultiFab 3D printer can print with 10 different materials at once

Kelly Hodgkins
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mit multifab 3d printer screenshot
3D printers can print in a boatload of different matierals these days. Glass, nylon, wood, plastic, metal, chocolate — you name it and there’s probably a printer out there that can make objects with it. But the thing is, despite the massive number of material options we’ve got these days, the vast majority of printers can still only print with one material at a time. MIT’s MultiFab changes this, and pushes 3D printing forward by combining an affordable multi-material printing platform with a software system that is open and hackable. It may not be ready for primetime household use, but the device promises to shake up the market with a relatively small price tag and a myriad of printing options.

Currently, the typical 3D printer is capable or printing a single material object, usually plastic, that is printed in pieces and assembled manually in layers. The MultiFab throws this method out the door with the ability to print up to 10 materials at the same time using a method that prints finished components in a single session. It does all this with a price tag of only $7,000, which is inexpensive compared to similar industrial machines that often cost up to $250,000, and are considerably more tedious to use.

MultiFab: Vision-Assisted Multi-Material 3D Printing

“The platform opens up new possibilities for manufacturing, giving researchers and hobbyists alike the power to create objects that have previously been difficult or even impossible to print.”says Javier Ramos, a research engineer at CSAIL who co-authored the paper with members of professor Wojciech Matusik’s Computational Fabrication Group.

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The MultiFab achieves its results using machine-vision 3D-scanning techniques that can quickly scan a large 3D area and adjust the printer’s calibration based on its scans. The unit has the ability to self-calibrate and self-correct, freeing users from the need to continuously fine tune the printing process. Theoretically, users could set the machine, walk away and return to a completed object. MultiFab also lets users embed components such as sensors into the object and specify moving components that are incorporated into the final product.

The printer can deliver a printing resolution of 40 microns, slightly less than half the width of a human hair, using off-the-shelf components that cost $7,000 to assemble. Besides its enterprise applications, the MIT group sees this technology bringing 3D printing to small companies and consumers. Locations that already offer single material printing, for example, could upgrade to this multi-material printer. These walk-in services would make it possible for an entrepreneur with big ideas but a small cash flow to prototype a device quickly and affordably.

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