https://gamesartist.co.uk/p-m-machine/
3D Artist Lyubov Vasileva breaks down the creation of this realistic Drilling and Precision Milling Machine. In this article, she talks goals, references, blockout, high-poly & low-poly, UVs, baking, texturing, lighting and rendering.
https://www.artstation.com/rose_madder
https://www.artstation.com/artwork/3E98mB