I am always eager to get lumberjacks at /v 4116. An efficient wood farm can generate you easily 12 stacks an hour of logs or ~480r at our STARTING rate of 40r/stack. A senior lumberjack can be even more efficient (16 stacks/hour at 65r/stack = 1040r/hr). The price is even higher for birch/pine logs.To build an efficient oak log farm, place the saplings in rows, with a row of torches in between each second row. (Two rows of saplings, for each row of torches.) There are more efficient arrangements of trees, but they are harder to cut down. When placed in rows you can go straight through and cut trees without stopping.I recommend to build your tree farm in a room with a height of 7-8 blocks. This prevents the huge trees from growing which have branches blocking other trees growing, and also are harder to cut down.