After designing your files in a 3D modeling program, you export them to the slicer, mostly in STL ... free 3D slicers you can ...

editing STL files, or repairing meshes. Below are my favorites, which I use for different purposes. FreeCAD is a free and open-source 3D printing tool for designing 3D models ready for 3D printing.

3D printing ... of 3D print files in the widely used STL format. It stands out from other websites for 3D print files due to its strong community interaction and its focus on free access to ...