Okay, so after two extract batches I'm thinking about going over to small AG batches (since I live in a small apartment and don't have a lot of money). The batch size will probably be 10 liters (just over 2.5 gallons).
Anyhow, I found an article on small scale AG brewing on a Swedish website and they had some weird method of lautering that I hadn't seen before. They did the mash in a kettle which was then put on the stove. Then they used an L-shaped copper tube with some metal net in one end and a siphon in the other and used it for sparging. They regulated the flow by adjusting the height of the collection vessel.
What do you think of this method? I'm a bit concerned about the efficiency. They made a pretty low-gravity beer in the example (1.048), and according to my calculations, the efficiency was about 78, but what about bigger beers?