A smooth surface.
A Smooth surface is a surface with no welds, glue, studs, etc. It is the default surface type for all added parts. A part with smooth surfaces will only stick to a part with a Welded surface. If you change any other surface to smooth, the surface tab will disappear.
A deprecated variation of this surface is SmoothNoOutlines. It is almost the same as Smooth, but gets rid of any outlines a 
Part may have if outlines are enabled. It was deprecated along with the entire outline system on July 1, 2019.[1]
References[]
- ↑ zeuxcg (2019, June 12). "Deprecating Outlines". From DevForum. Archived from the original on October 13, 2022.