String test gcodes for Ender-3

thingiverse

This stringing test piece I created utilizes a 40mm distance between column centers, allowing for precise fine-tuning of retraction settings. The STL file is included for slicing purposes. The G-Code files are designed for my Ender-3, but they may be compatible with other printers as well (though I'm not an expert, so I can't guarantee it). The first layer is set to 240°C hot end and 80°C bed temperature, while the rest of the layers use 220°C hot end and 70°C bed. To adjust these temperatures, open the G-Codes in a text editor and modify the values at the following codes: Bed: M140 (first two instances), M190 (one instance) Hot end: M104 (first two instances), M109 (one instance) Once edited, simply copy the files to an SD card and you're ready to print. The attached G-Codes have descriptive names for easy identification. The retraction speeds range from 20 mm/s to 50 mm/s, with two prints for each speed: One from 0-4 mm and one from 5-9 mm Each of these changes retraction distance every 25 layers (5 mm) so: 0-4 mm 0.4-5.4 mm layer 2-27: 0 mm retraction (the base is 2 layers, 0.4 mm thick) 5.4-10.4 mm layer 27-52: 1 mm retraction 10.4-15.4 mm layer 52-77: 2 mm retraction 15.4-20.4 mm layer 77-102: 3 mm retraction 20.4-25.4 mm layer 102-127: 4 mm retraction 5-9 mm 0.4-5.4 mm layer 2-27: 5 mm retraction (the base is 2 layers, 0.4 mm thick) 5.4-10.4 mm layer 27-52: 6 mm retraction 10.4-15.4 mm layer 52-77: 7 mm retraction 15.4-20.4 mm layer 77-102: 8 mm retraction 20.4-25.4 mm layer 102-127: 9 mm retraction I've printed all of these codes to confirm their functionality and to visualize which combinations of speeds and distances work best for different filaments. While it might be simpler to set up the whole print with one setting, I believe this method results in less filament waste and allows for easier comparison of settings. Feel free to comment on your thoughts, share photos of your prints, and happy printing!