I took a some quick cell phone pics of my rig this morning to help a fellow HBT'er come up with a design. I built my rig about 6 months ago out of wood. It looks black due to a coat of grill paint. My favorite part about the design is that I was able to integrate the old kettle, the SQ14 burner, and my igloo MLT and HLT all into the rig. It beats balancing everything on buckets, no more lifting, and it has a really small, low footprint. I can also break it down to 2 pieces to fit in my car when I brew at a friend's house, because the tallest part (that holds the mash tun) is attached to the bottom section with 3/8" bolts and wingnuts. Clearly, it is inspired by the B3 1550, but it is the only one I have seen that was built out of wood. I will also give credit to slobrewer.com who has a prettly slick 1550 style steel rig that he welded up himself.
The first picture just clearly labels all the components. The second picture shows the flow of liquid during the circular fly sparge. I also tossed in a picture of the mashout recirc and one of the jamil-o-chiller, but those are both pretty commonly known processes. I am thinking of starting a new thread (with a halfway decent camera) to closely cover the entire brewday process and some components like my mash tun, the filter assembly, and my three valve pump priming system, because they are all pretty unique designs. If I get around to taking those pictures, I'll edit this post with a link to the new thread.