Converting .blend files to .stl format can be essential for 3D printing or sharing 3D models with others. Fortunately, the process is straightforward and can be done using software like Blender. To begin, open the .blend file in Blender and make any necessary adjustments to the 3D model. Once you are satisfied with the model, go to 'File' and then 'Export' and select 'STL' as the file format. Finally, choose a location to save the .stl file and click 'Export.' That's it! You have successfully converted a .blend file to .stl format. Now you can use the .stl file for 3D printing or sharing with others. Give it a try and see how simple it can be!