Radio Free Europe/Radio Liberty. 2013. Available online: http://www.rferl.org/content/printing-3d-new-industrial-revolution/24949765.html (accessed on 11 October 2017). Zhang, C.; Anzalone, N.C.; Faria, R.P.; Pearce, J.M. Open-source 3D-printable optics equipment. PLoS ONE 2013, 8...