I had a empty cinder block bed that I wanted to experiment in by doing a wedge type system. Usually wedge systems are on a larger scale but I got the idea of utilizing what I already have from a conversation I had with another female small business worm farmer at the Vermiculture Conference in Raleigh NC this year. (Thanks, Mel)
Here is what the empty bed looks like starting out 
After combining all my bedding materials and food inside the bed, I took half of an established bin of red wigglers and mixed it all together.
After mixing together I then gently pushed and formed the start of the wedge
If you notice I left some room at the top so I could add a thick layer of leaves for winter insulation.
I gently watered it some more and then placed wet leaf mold on top with dry leaves on top of that
With a wedge you need three supporting sides and a open end. The open end is where you place fresh food and bedding and the worms will migrate to the fresh food leaving castings behind.
When you get to the end you harvest the finished castings up to that end spot and then reverse back to the other end.
Absolutely genius idea!! At least I hope it works out that way. I will update as time goes by.
Happy Worm Farming all !