3DMaker Engineering
3dmakerengineering.com
Evansville, Indiana company selling build plates, nozzles, filament and accessories, plus discounted B-stock, with guides and tutorials aimed at making printing easier and more reliable.
Fabreeko
fabreeko.com
US supplier of premium printer parts, best known for its spring-steel build plates (including the Honeybadger line) and Voron kits and components.