Mirroring Seamless Normals?

allyx

Is possible to a make seamless model with mirrored UVs with tangent normal maps part? I know it is possible when the seams meet at hard edges and the object is not welded together.

http://ally.1sweethost.com/

CrazyButcher

some engines/exporters will do the "split" internally, but preserve the original normals, so that object appears welded, when it's not.
so yes it's possible, but depends on the engine/tools