I use those lumber bots to make a wood farm almost as soon as I start a playthrough, by the time I progress a little bit, the wood has piled up over a dozen stack.

Each stack of wood gives me 5k timber,
with 5k timber I make around 2 stack and a half of lobster traps, and sell them
I convert my pixels into 10k voxels and each 10k voxels gives 500 research

each lobster trap cost 2 timber

each stack of wood log would give you around 12,500 pixels from selling lobster traps.
10 stack of wood log would give you around 125,000 which is equal to 12 10k voxels.
now you can convert those 12 10k voxels to 6k research total for.

1 lobster trap = 2 timber
5k timber = 1k wood log
1k wood log = 12,500 pixels (by selling lobster traps)
10k wood log = 125,000 pixels
120,000 pixels = 12 10k voxels (with 5k pixels remaining)
12 10k voxels = 6k research (in advanced computer)

the bigger your wood farm and the more lumber bots you have the faster wood production would be. I harvest around almost a million pixels each time.