What are the steps to save a STL 3D model for beginners?

For beginners, save an STL 3D model by finishing your design in a tool like Tinkercad or Blender, using “Export” or “Save As” to select STL format, choosing binary (compact) or ASCII (text-readable) if prompted, then saving to your computer. STL captures only surface geometry (triangles)—no color or texture. Binary is better for 3D printing (smaller file size). In Tinkercad: Click “Export” > “STL” (one-click simplicity). In Blender: Go to “File” > “Export” > “STL” (use default settings). Always preview the STL in a slicer (like Cura) to check for errors before printing.