Is there a way to convert each duplicate object into an individual object?
I’m trying to creating wooden stairs with it and I want to get some specularity on each one, but because each stair is part of one object only a few get specularity in the render.
Please help 
You could click Apply in the Modifier tab (or Alt-C) then select all in Edit mode and hit P >> All Loose Parts. If you already have Materials and Textures then you’ll have to select each new Object in Object mode and hit U >> Obj, ObjData, Mat and Tex.
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cool, thanks. Now I can do what I needed, now it’s just fine tuning.
Thank you