MAKE A BASE METAL MATERIAL
Use Vraymtl to make a base metal material, which is what the model will be made of. I used a free texture. You can find free textures on the internet at www.textures.com, for example. You can get a large number of free tutorials about making a metal material as well. I cut the texture, then I turned on Fresnel reflection and added some reflection with 0.7 gloss value, but this will depend on what kind of metal you’re after.