Wood

Wood is collected from trees.

You can collect wood with just your hands, or with an Axe or Fine Steel Axe if one of those is in your inventory. You must have the Precision Woodcutting skill in order to use a Fine Steel Axe.

Base

Every tree has a base amount of wood it will produce. This is the amount of wood you will get when collecting without any kind of axe, and before considering any bonuses. Different kinds of trees (different graphic) will have different bases. Bases vary from 1 to 10 wood.

Bonuses

All bonuses are calculated from the base amount of wood. Multiple bonuses can add to your total wood collection, but they cannot stack on each other to multiply your bonus.

• If you are carrying an axe, you will collect twice the base amount of wood, but the regeneration time is doubled.
• if you are carrying a Fine Steel Axe (FSA), you will collect three times the base amount of wood, but the regeneration time is tripled. You must have the Precision Woodcutting skill in order to use a Fine Steel Axe.
• If your perception is greater than 0, you have a chance to get more wood when you harvest from a tree. The amount extra that you get is equal to the tree's base amount. The higher your perception the higher a chance you have of getting this bonus.
• For each Pyramid of the Living Forest(PoLF) that is built in egypt (up to 7), you will get 1 extra wood per collection.

Regeneration

Every tree needs an amount of time to regenerate before more wood can be collected from it.

• Without any axe, the regeneration time is 1 minute.
• With a regular axe, the regeneration time is 2 minutes.
• With a fine steel axe, the regeneration time is 3 minutes.
• If the area under a tree is polluted, the regeneration will be much longer. (5-15 minutes)
• One unit of saltpeter, applied to the tree, will reduce the regeneration time by half. Repeated applications will halve it further.

Examples

for a 2-wood tree,

• Using nothing and having no pyramids gets you 2 wood with a recharge time of 1 minute.
• Using a fine steel axe and having no pyramids gets you 6 wood with a recharge time of 3 minutes.
• Using a fine steel axe, if the perception bonus activates, you will get 8 wood with a recharge time of 3 minutes.
• Using a fine steel axe and having 2 Pyramids of the Living Forest, if the perception bonus activates, you will get 10 wood with a recharge time of 3 minutes.

Clearcutting

Trees may be clearcut by people with the appropriate skill; this will produce 250 times the wood of a single harvest, but will render the tree unable of producing wood for a week. Saltpeter cannot be used on a clearcut tree.

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The following calculations were written by silver, who originally posted it to the atitd.net forums1. Reproduced here with permission.

here's the math

given 1: I'm going to use saltpeter to cut recut times down to under 4 seconds.

that works out to:
without an axe, 60s takes 4 saltpeter to reduce (30, 15, 7, 3)
with a regular axe, 120s takes 5 saltpeter to reduce (60, 30, 15, 7, 3)
with an FSA, 180s takes 6 saltpeter to reduce (90, 45, 22, 11, 5, 2)

given 2: time is virtually irrelevant, since I'm talking under 10 minutes to burn up an armload of saltpeter. therefore my metric will be "wood per saltpeter".

given 3: the basic wood formula is this:
Let A = your axe level (1 for no axe, 2 for axe, 3 for FSA)
Let F = the number of extant pyramids of the living forest
Let P = your probability of getting a perception bonus (remember probabilities are between 0 and 1, inclusive)
Let T = your tree size

average wood per cut = AT + F + PT

from given #1, we know then that wood/saltpeter = (AT + F + PT) / (3+A)

given 4: I'm gonna use a 10 tree, and let's go ahead and do the math as if there are 2 PotLF

if I consider various settings for A, I'm left with only one unknown, P:
no-axe: (12 + 10P) / 4
axe: (22 + 10P) / 5
FSA: (32 + 10P) / 6

with these givens, I can determine, then, the "breakeven" point - the probability of perception bonus - at which the wood I get because of repeated perceptions bonuses makes "no axe" better than "FSA" - by setting the wood/salpeter of no-axe equal to the wood/saltpeter of FSA, and solving for P.

(12 + 10P) / 4 = (32 + 10P) / 6 from givens
36 + 30P = 64 + 20P multiply both sides by 12
10P = 28 move terms
P = 2.8

so if I had a perception so high that not only do I get the perception bonus on every single cut, but I actually get it twice all the time, and three times most of the time, THEN I'd be better off dropping my FSA.

I don't think perception bonus works like that

I did work it out with 7 Pyramids of the Living Forest, and did compare regular axe to FSA, and P was always greater than 1.

all this hinges on the sub-conclusion in given #2, that I will be measuring wood/saltpeter. if I I don't wish to use a ton of saltpeter, then I am better off dropping the FSA.
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"silver" of the Paper Street Soap Company in South Egypt