Excelsior

First go to carpenter vendor, he'll teach you carpentry around 30 for around 300 gold.

30.0 - 47.3 Medium Crate (15 Boards) around 3.5k Boards used
47.3 - 52.6 Large Crate (18 Boards) around 1.5k Boards used
52.6 - 63.1 Wooden Shield (9 Boards) around 3k Boards used
63.1 - 70.0 Writing Table (17 Boards) around 4k Boards used
70.0 - 73.6 Bokuto (6 Boards) around 0.7k Boards used
73.6 - 78.9 Quarter Staff (6 Boards) around 1k Boards used
78.9 - 100 Gnarled Staff (6 Boards) around 2.8k Boards used

What about over 100? Same thing? I've gotten to 103.9 and ain't getting the gains .

Not sure if it will help you

from 100 to 103.9 g staffs
103.9 to 110 tetsubo
110 to 111.8 easel
theres a few different ones for next gains
ornate wooded chest,gilded,plain
111.8 to 115.0
from here the gains will be SLOW
flour mill water trough to 119.7
at this point you can switch to masonery to finish it off

I went by the following:

gnarled staves till 103ish
easels till 108ish
decorative boxes to 120

i had a razor macro setup to make the item then chop the item and it went VERY quickly and I used about 10k boards total.
probably took me about 2 hours from 100-120.

-Iago