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Once the plank maker has processed some logs, the resulting planks may be withdrawn via the machine management interface.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

Creation[edit | edit source]

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 components1096,116[r 1]961,160
Simple parts.pngSimple parts150349[r 2]52,350
Crafted parts.pngCrafted parts1501,655[r 3]248,250
Total price1,270,470
  1. ^ Price based on the average cost per material of several items. See RS:Material prices § Direct components for details.
  2. ^ Price based on the GE value of Yak-hide as the cheapest price per component. See RS:Material prices § Simple parts for details.
  3. ^ Price based on the average cost per material of several items. See RS:Material prices § Crafted parts for details.

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 295.3 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
Hourly profit Daily profit Weekly profit Profit via
Profit via
Logs.png: RS3 Inventory image of LogsLogs
Plank.png: RS3 Inventory image of PlankPlank
−436.27 −5,671.57 −136,117.8 −952,824.6 −241 −231
Oak logs.png: RS3 Inventory image of Oak logsOak logs
Oak plank.png: RS3 Inventory image of Oak plankOak plank
−803.27 −10,442.58 −250,621.8 −1,754,352.6 −758 −733
Teak logs.png: RS3 Inventory image of Teak logsTeak logs
Teak plank.png: RS3 Inventory image of Teak plankTeak plank
−41.27 −536.58 −12,877.8 −90,144.6 −246 −196
Mahogany logs.png: RS3 Inventory image of Mahogany logsMahogany logs
Mahogany plank.png: RS3 Inventory image of Mahogany plankMahogany plank
313.73 4,078.43 97,882.2 685,175.4 −891 −741

Update history[edit | edit source]

This information has been compiled as part of the update history project. Some updates may not be included - see here for how to help out!
  • ninja 14 December 2020 (Update):
    • Players will now receive log in and update messages whenever their Invention machines have finished processing their inputs, run out of secondary inputs, or run out of charges.
      • These messages can be toggled in the Login Messages or Notification Messages option menus.
  • 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.