as the title indicates. how can i maintaing Part B Appearace visible in part A.
It could be that the appearance of part level. It looks as though part A has no appearance set so part B will assume this also.
Have you tried inserting part A into part B?
To avoid this any how I would put these parts together as an assembly.
Otherwise you will have to set the appearance at the face/surface level.
As Mike suggested, unless there is some over-riding reason, I would do this as an assembly which will keep much more flexibility for changing things including appearances in the future. When you insert the part into another, it likely "takes on" the appearance of the parent part. Even if it did not immediately, I highly doubt that a color change to the inserted part would be carried thru to the parent part in the future whereas it certainly could be in an assembly.
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