The provided source offers a detailed overview of vapor smoothing, a post-processing technique for 3D printed parts that creates a smooth, sealed, and polished surface using solvent vapor. The text explains that this technique, sometimes called chemical vapor smoothing, melts the outermost layer of thermoplastic materials, causing it to self-level and fill microscopic imperfections. The process is broken down into distinct stages, including preparation, vaporization, smoothing, drying, and curing, all typically performed within a sealed chamber. Key benefits highlighted include improved aesthetics and performance, enhanced resistance to chemicals, and the ability to smooth complex geometries inaccessible to manual sanding. Finally, the source emphasizes the importance of safety precautions, such as using proper ventilation and wearing protective equipment, due to the volatile and potentially toxic nature of the chemicals involved. https://thebusinessofmanufacturingpodcast.podbean.com/