Read more about our 3D printer filament here. We don’t resell filament… we sell filament that we extrude ourselves. Through more than a decade of 3D printer experience, mechanical engineering experience, and manufacturing experience, we’ve developed our own production process to bring the quality the 3D printing community need. All of the filament we make and sell is 100% backed. No matter what channel you purchase through, satisfaction is always 100% guaranteed.