This article is about the machine. For the NPC, see Plank maker.
Plank maker

The plank maker is a machine that can be built in the Invention Guild basement at level 99 Invention. It automatically converts logs into planks, even while the player is offline. The plank maker does not incur the normal coin cost for converting logs to planks.

Every hour, on the hour, the plank maker will process up to 13 items deposited in it, consuming up to 225 machine charge. Building it requires 30 of the power allotment supplied by the generator. It can hold up to 2,500 items over the three input slots. Researching the plank maker blueprint awards 153,526 Invention experience.

Once the plank make has processed some logs, the resulting planks may be withdrawn via the machine management interface.

At level 117 Invention, the plank maker can be upgraded to the high capacity plank maker.

Plank maker interface

The Plank maker interface

Plank maker (icon) Plank maker
Invention-Make-X GE icon
3,100 XP--
Invention Invention level99
Blueprint (Invention) Discover: Plank maker
Power (icon) Power required: 30
P2P icon Members onlyYes
Direct componentsDirect components10N/A-
Simple partsSimple parts150N/A-
Crafted partsCrafted parts150N/A-


The plank maker processes 13 items per hour at a cost of 225 machine charge. Thus, each item costs 17.3 machine charge to process - an equivalent of 416.2 coins per item.

The plank maker processes 312 items per day at a cost of 5,400 machine charge (approximately 1.8 divine charges). When completely filled, it will take 8 days 1 hour to process the 2,500 input items, using 43,425 machine charges (approximately 14.5 divine charges).


Profit via
Daily profit Weekly profit Profit via
Profit via
Logs Logs
Plank Plank
-150.16 -46,849.2 -327,944.4 166 176
Oak logs Oak logs
Oak plank Oak plank
-101.16 -31,561.2 -220,928.4 65 90
Teak logs Teak logs
Teak plank Teak plank
140.84 43,942.8 307,599.6 57 107
Mahogany logs Mahogany logs
Mahogany plank Mahogany plank
211.84 66,094.8 462,663.6 -872 -722