No, vapor smoothing PLA and PTEG may be impossible, especially with solvents like acetone. PLA and PETG exhibit good chemical resistance and are not soluble in ketones. Consequently, solvents such as acetone and alcohol have minimal impact on them. While PLA smoothing has garnered attention in the 3D printing community, attempts to find chemical alternatives have proven to be too hazardous for practical use. As a result, the most dependable method for smoothing PLA and PETG is through manual sanding.