It is home to a huge collection of user-generated G-Code files that can be downloaded and printed on your 3D printer. Thingiverse is one of the most popular online communities for 3D printing enthusiasts. Here are some of the best places to find 3D printer G-Code files: I wrote an article about How to Modify G-Code in Cura which can be useful in these situations. That means that you may need to edit your G-Code to get it printed properly on your setup. Just be aware that G-Codes are tweaked to specific setups depending on the filament and bed type, as stated by one user. There are several ways to find 3D printer G-Code files online, including searching popular 3D printing websites, browsing through online forums, and using search engines. Where Do You Find 3D Printer G-Code Files? Ender 3 Quicker Bed Leveling Calibration Procedure.Where Do You Find 3D Printer G-Code Files?.