A California startup sees customized consumer goods as the future of 3D printing, but plans to prove the concept with medical CPAP masks, reports Fortune.

Metamason is in the middle of raising roughly $2 million to help fund regulatory testing and clinical trials and the necessary Food and Drug Administration tests. Karpas says Metamason is currently looking to recruit 300 sleep centers across the U.S. to be the first customers of the masks the startup will create.

But the innovation, at least as far as 3D printing is concerned, is the platform Karpas describes: Something where people open up a tablet or laptop with a 3D scanner attached, go into the Metamason Scan Fit Print app, and can take a digital scan of their face—or whatever else they’re designing—customize the mask, and make the purchase.