Some of the equipment I used to make the manifold. I no longer own the bench mounted mill/drill machine I started making the manifold with.
That poor little band saw is hanging tough.
Hanging on the board over the lathe you can see a small number of the many cardboard templates I've collected over the years. The larger one was used to trace out the main plenum body piece.
I posted this because an up and coming fabricator asked about the equipment I use.