User blog comment:Mathmagician/Hard Mode Farming/@comment-3529826-20120102170556/@comment-4674838-20120103230519

I'm glad you liked the guide. I'm not exactly sure what you mean by multi-traps, but here's what comes to my mind:

1) If lava can't kill a monster, then it's going to be very difficult to farm it. Dart traps will work, albiet very slowly. Try to stick with lava.

2) Using heart statues to heal yourself and building a tiny room with a bed to set your spawn at your farm are both completely obvious but helpful ideas, especially for afk farming.

3) Don't build your farm in the biome. Build the farm the way you want it first and then build the biome around it. Example: rather than building a corruption farm in an existing chasm, you can get more control over the monster spawning if you build your somewhere else first and then just place a bunch of ebonstone around it to create an artificial corruption.

4) The way monsters spawn is that the game looks for a block 50-80 blocks away from where your character is standing. Then it chooses a monster type to spawn. Then it draws a straight line down until it finds the "ground." Then it spawns the monster there. How you can exploit this: Building more "ground" (i.e. rows of platforms sorta like in ) can cause the game to spawn ground monsters more frequently than flying monsters. Also, the 50-80 distance is where monsters can generally spawn, so make sure there is empty space in that area and that your artificial biome is close to it, so as to cause the monsters that you want to spawn to spawn there. Also make sure that the monsters have a straight path from that spawn area to your trap.

Beyond saying that I'm not sure I can help you much further. Farming as a general concept is pretty easy to talk about. But I would rather not take it to the point of saying "here's my blueprints, you should build in exactly this way and copy me." It's better just to talk about the key points instead and let people build the way they want to build.