BeamSTL

BeamSTL is a free CAD focusing on preparing models for 3D printing. It repairs holes, flipped normals, or manifold issues automatically. Users can create or import shapes, apply booleans, or extrude sketches. A printer preview mode simulates layer slicing. BeamSTL also estimates print times based on FDM speeds. With a straightforward approach and auto repair, BeamSTL suits makers wanting a quick path from simple model design to a 3D-print-ready STL without advanced mechanical features.