Thank you Abenz and thank you Hans.
The file may well be helpful to see what is different, the model not so. It can be shared as Hans's link shows or left click on my name to show my email. What i need is a large triangular mirror for a cabinet that fits under stairs.
The earlier parts of this thread i find confusing, mirror, walls, light sources and mannequins.... just a mirror, Hans says mtl Emmanuel says not .... me....confused.

Thx again to both, appreciate you taking the time to assist