A Compact Create Mod Tree Farm Guide
Materials required:
- 9x any block (for the body)*
- 3x Mechanical Saw
- 3x Deployer
- 2x Portable Storage Interface
- 1x Mechanical Bearing
- 1x Waterwheel
- 1x Bucket of Water
- 1x Shaft
- 1x Super Glue*
(* you can use Linear Chassis for the body and make them sticky with slime instead of supergluing the whole thing if preferred)
Dig a 7x7 hole, but leave 1 block in each corner:

In the center, dig a 3x3 hole 2 blocks deep, leaving one bottom corner intact:

Place a waterweel in the center of the bottom of the hole, and place the water next to the intact corner. The wheel should start spinning:

Cover up the hole leaving only the center, and place a shaft in the remaining hole (this shaft should also be spinning):

Place the Mechanical Bearing on top of this shaft:

Place your body material in a long C-shape 3 blocks high and 4 blocks wide. Put 3 Mechanical Saws on this side like so:

Place 3 deployers on the back. If they're facing the wrong way, you can rotate them with a wrench:

Place a Chest and Portable Storage Interface in the center of the body. Set up another Interface 1 block away facing inward, attached to an extraction method of your choice:

Place a temporary block next to the deployers and right-click it with superglue:

Right-click the opposite corner block (the rightmost Saw) with superglue to glue the whole thing together:

Set the deployers to use saplings by right-clicking the filter with a sapling:

Right-click the top of the Bearing with an empty hand to turn on the machine:

Being careful not to get hit by the saws, replace the dirt and plant as many saplings as are available:

After a short while, trees will begin growing and immediately get chopped down by the saws. If lined up correctly, the two interfaces will extend and connect on each rotation.
Farm complete!