Protean plank

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Key token.png
Protean plank is a Treasure Hunter reward.
If the associated promotion is not currently active, it may not be obtainable.
Protean plank detail.png

Protean planks are stackable planks that are usable in place of any other type of plank in the Construction skill. They can be won from Treasure Hunter or made from protean logs at a sawmill.

When used for flatpacks, each plank takes 4.8 seconds to process (3.6 seconds with a protean powerup).

If protean planks and other plank types (including any planks in a plank box) are in the inventory, the other plank types are used before the protean planks.

They cannot be used:

They can be used to construct frames for grapevine seeds.

Protean logs can be turned into protean planks at any sawmill at the cost of 5 coins for each plank.

The most cost-effective use of protean planks is to treat them as stackable mahogany planks, and make items such as mahogany tables, flotsam prawnbrokers or Mahogany armchairs or Mahogany flatpacks. This can be done in front of Advisor Ghrim in Miscellania with a portable workbench and the flatpacks given to him. The coins can then be withdrawn from Advisor Ghrim or used to finance the kingdom activities.

Protean planks, as with all protean items, can be converted at a 3:2 ratio into other protean items.

The xp given per plank is dependent on the type of plank it replaced when used:

Plank Experience
Oak plank.png Oak 60
Teak plank.png Teak 90
Mahogany plank.png Mahogany 140

Drop sources[edit | edit source]

For an exhaustive list of all known sources for this item, see here.
Showing 100 out of 143 sources.

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!
  • patch 10 August 2020 (Update):
    • Constructing flatpacks with protean planks will now correctly consider how much Inventory space is left.
  • patch 29 May 2018 (Update):
    • Protean planks are now consistently used as crafting materials when using a clockmaker's bench (crafting table) inside a player-owned house.
  • patch 24 August 2015 (Update):
    • Protean planks no longer make and drop an extra flatpack when your inventory is full.
  • patch 15 June 2015 (Update):
    • Protean planks no longer make and drop an extra flatpack when the player's inventory is full.
  • patch 5 January 2015 (Update):
    • Protean planks may now be used to build grapevine frames.

Trivia[edit | edit source]

  • Although there have been multiple patches as late as August 2020 addressing the issue, as of February 2021 if you craft more flatpacks with protean planks than you have inventory space on a portable workbench then one will be dropped on the ground and you will receive a red message that says "Your inventory is full. The flatpack you created has been dropped on the ground."