Having been made aware that it's possible thanks to evillair posting this:
[Blocked Image: http://www.evillair.net//e107/e107_files/images/d3_test.jpg]
An image of a fully rendered Delta labs door from Doom 3, I have asked him how he did this and having had a go myself again with D3 I came up with these:
My attempt at the delta door using his method:
Didn't come out the same as evil's despite using the same filters 
[Blocked Image: http://img.photobucket.com/albums/v221/deathcrush/doom3/deldrs.jpg]
Rendering a favourite door of mine:
[Blocked Image: http://img.photobucket.com/albums/v221/deathcrush/doom3/jumbodrs.jpg]
Lastly a very quick crappy job on the generic elevator:
[Blocked Image: http://img.photobucket.com/albums/v221/deathcrush/doom3/deleledrs.jpg]
I made some adjustments with the lighting in the last texture of each set to try and get the same metallic shiney look in an older engine and it does kind of work to a degree. This is just purely for fun!
Ok, your turn now, let's see if you can do better than us and I'll make sure evillair sees this so he can post his own tutorial 
