3D printed text: I used the files from Mark Presling, scaled 40%    • How To Make Hybrid Patterns For Cast ...  
Creator 3 printer : https://flashforge-usa.com/products/f...
Flashforge profesional printers: https://flashforge-usa.com/pages/prof...
Greensand, flux and foundry products: https://www.artisanfoundry.co.uk/