Sunlu spool adapter 72mm to 40mm reducer

thingiverse

# Print Details **Printer:** Creality Ender 3 Pro, manufactured in Q3 of 2019 Equipped with BlTouch bed leveling technology **Material:** Sunlu PETG filament Color: blue Diameter: 1.75mm Melting points: 235C for the hotend and 75C for the bed **Setup:** Nozzle size: 0.6mm Bed surface: glass Printer is located in a well-insulated enclosure to minimize heat loss **Settings:** Resolution: Initial layer height: 0.34mm Standard layer height: 0.30mm Line width: 0.60mm Infill: Density: 15% Pattern: grid Temperatures: Bed temperature: 75C Hotend temperature: 235C Cooling: Initial cooling rate: 25% until a thickness of 0.94mm (3 layers) Remaining cooling rate: 50% Print speed: 100% Adhesion: Brim: 10mm, applied only to the outer edges Supports: Type: concentric Overhang angle: 22.5 degrees Density: 20% ## Notes The use of supports may not be necessary in this case. I chose to include them because I am still learning about 3D printing and wanted to ensure that the threads printed correctly. With the supports in place, the threads turned out perfectly, and the supports were easy to remove. ## Files Included **`sunlu_2-40mm.stl`** Remixed from [here](https://www.thingiverse.com/thing:2951446) Inner diameter reduced from 54mm to 40mm **`sunlu_1.stl`, `sunlu_2.stl`** Imported into Tinkercad and then exported Noticeable reduction in polygon quantity for both objects, but no noticeable impact on print time or slicing (Cura 4)