125 GHz Frequency Doubler using a Waveguide Cavity Produced by Stereolithography Read this technical paper to learn how micro-precision 3D printing was used to fabricate a 125 GHz frequency doubler using a waveguide. Download Technical Paper Micro 3D Printing and Metal Plating for Low-Volume, High-Precision Parts Learn how micro 3D printing and metal plating can be used together to produce low-cost parts for applications that require metal surfaces or electrical conductivity. Answer a few questions about your resolution requirements, build volume, and application ‚ and our selection tool will match you to the right microArch system.