I can’t say I have tried to make a log with different side and end materials.
If you are not having much luck with the COOR wrapping and projection values or the VERT coordinates, then I would simplify it by having separate (very thin) CPRISMS (or other shapes) ate the ends of the log.
You can then control the materials separately for the ends ant the main log (sides) and may find it a little easier.
Barry.
Versions 6.5 to 22
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