Extruded Aluminium

[PhilippeV8]

I'm searching for a material for extruded aluminium profiles which doesn't kill my render-time.

I've tried some of the metal materials in the library but can't find anything that works for me.  Anyone has some tips ?

I got one now with Anisotropic
Diffuse ( 59:59:59 )
Specular ( pure white )
RoughX 0,010
RoughY 0,090
Angle 0
Mode 1
Glossy samples 3

I also added a bumpmap with extrusion lines, but when I render with this turned on the texture becomes grainy.
I'm quite happy with this one, though it renders slooow and I have to turn off the extrusion lines.

[PhilippeV8]

What is also important, is that if you got an extruded (e.g. squared) tube, the inside of the tube must not be black ... it still needs to show a gradient from the outside inwards and you have to have the corners visible.

[PhilippeV8]

I think I have found a solution to this adding a tiled semi-transparent lable to the material .. need to work on it further.

[Richman]

Can you show us some images??

[PhilippeV8]

I am rendering them ... but it turns out that my current material takes a loooooooooooooooooooooooooooong time to render

[PhilippeV8]

Here are the renders ..

The first is the profile with default material ... I want the inside of the squared tube to be visible just like this.

The second is just default chrome .. I want the outside to look like this though less clean and with scratch marks from the extrusion.

The final render is what I got now and what I waited looooong time to render ... As you can see, it's not perfect yet .. not at all.
It's got weird groves near the front and I don't like the part inside the partly open cavety.

[PhilippeV8]

I think this one is getting real close ...

[guest84672]

The last one is great.

[justindustrial]

The 'metal' material renders quickly, maybe you could try that with a roughness of 0.2 or something, give it a warm aluminum colour and add a planar bumpmap for your extrusion lines? Don't forget to crank up glossy samples.