New to the site:
Trying to find some new rocker covers for my 4.3 Chevy motor yielded poor results. The only ones available in the US were Edelbrock's "Signature Series", which I thought were ugly, so I put my mind to fabbing my own. I built them a while back and dont have any "in progress" pics, but here's the final result:

First I polished them

Then decided to have them powdercoated:

To make sure they were leak free I had the bases flycut by a machinist following welding.