Plank maker (machine)

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This article is about the machine. For the NPC, see 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Once the plank maker has processed some logs, the resulting planks may be withdrawn via the machine management interface.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.

The Plank maker interface
Plank maker (icon).png Plank maker (machine)
Invention-Hourglass.pngMake-X GE icon.png
3,100 XP-?-
Invention Invention level99
Blueprint (Invention).png Discover: Plank maker
Power (icon).png Power required: 30
P2P icon.png Members only
Direct components.pngDirect components10N/A-
Simple parts.pngSimple parts150N/A-
Crafted parts.pngCrafted parts150N/A-

Analysis[edit | edit source]

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 470.7 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[edit | edit source]

Profit via
Daily profit Weekly profit Profit via
Profit via
Logs.png: RS3 Inventory image of LogsLogs
Plank.png: RS3 Inventory image of PlankPlank
7.27 2,266.8 15,867.6 378 388
Oak logs.png: RS3 Inventory image of Oak logsOak logs
Oak plank.png: RS3 Inventory image of Oak plankOak plank
-234.73 -73,237.2 -512,660.4 -14 11
Teak logs.png: RS3 Inventory image of Teak logsTeak logs
Teak plank.png: RS3 Inventory image of Teak plankTeak plank
81.27 25,354.8 177,483.6 52 102
Mahogany logs.png: RS3 Inventory image of Mahogany logsMahogany logs
Mahogany plank.png: RS3 Inventory image of Mahogany plankMahogany plank
749.27 233,770.8 1,636,395.6 -280 -130

Update history[edit | edit source]

The update history project is a work-in-progress – not all updates to this topic may be covered below. See here for how to help out!
  • patch 2 October 2017 (Update):
    • The system that checks for free inventory space when adding or topping-up stacks of an item in the plank maker and potion producing machines has been fixed.