3D printing firm SOLS has received $6.4 million Series A funding round. The investment was led by Lux Capital. New financiers also joined the round including Founders Found and existing investors Rothenberg Ventures, Grape Arbor VC, FundersGuild, RRE and Felicis Ventures.

The company operates through printing customizing shoe insoles to help relieve foot pain and other ailments for users. SOLS has previously raised an investment worth $1.75 million.

SOLS was established by Kegan Schouwenburg after being fascinated by the potential of the product through the integration of 3D technology. Schouwenburg previously worked with Shapeways, a 3D printery, as its operations director and industrial engineer.

The company has made an app the runs on smartphones operated by iOS or Android. The app allows users to “scan” their foot through video recording. SOLS would then process the video through algorithms to help make a customized insole. Aside from giving users customized insoles, SOLS also gives information regarding the user’s weight, lifestyle information and would ask what are the insoles for to be able to create the final product.