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Mahogany plank detail

Mahogany planks are the highest level planks used in the Construction skill.

Use in Construction

The planks may then be used to make furniture in a player-owned house. Making items with mahogany planks gives 140 Construction experience per plank used. Mahogany planks are the most expensive of the four types of planks. Mahogany planks can be used to make flatpacks, but the demand for such furniture is very low. Daily challenges however typically require furniture to be made as flatpacks, which in turn are exchanged for a Construction experience reward. The biggest demand for mahogany planks is from people power-training Construction by building and removing Flotsam prawnbrokers. More info about the cost of experience using various planks is available here.

Making planks

Log Cost in coins
Sawmill[a 1]_ Portable sawmill Plank Make

+ 1,312 for runes[a 2]

Plank maker

+ 245.7 [a 3]

High capacity plank maker

+ 212.9 [a 4]

Mahogany logs 1,500/1,350[a 5] 1,350/1,200[a 5] 1,050/900[a 5] 0 0


Log (Value) Plank (Value) Profit via sawmill Profit via portable sawmill Profit via plank make Profit via plank maker Profit via high capacity plank maker
Mahogany logs Mahogany logs 309 Mahogany plank Mahogany plank 867 -942/-792[a 5] -792/-642[a 5] -1,804/-1,654[a 5] 312.33 345.09
  1. ^ 2 special mahogany logs (can be noted) can be used to convert up to 27 regular mahogany logs when given to a Sawmill operator.
  2. ^ Assumes the use of a staff to save Earth runes.
  3. ^ Each log costs 17.3 machine charge to process
  4. ^ Each log costs 15 machine charge to process
  5. ^ a b c d e f With the Construction Cape Perk cost reduction.


Players can chop down mahogany trees using the Woodcutting skill, and there is a small chance of getting a special log. If players get 2 of these, they can exchange them for a completely free conversion of the logs in your inventory into planks. That means that Construction could be completely free, but extremely time-consuming. This method is not recommended for players that can make more money elsewhere at a decent rate because of the lack of efficiency. However, the Special mahogany log page analyses the expected return on cutting Mahogany, which can be surprisingly high compared to other Woodcutting activities.

Players can also get mahogany planks as a reward from level 3 Treasure Trail Clue scrolls, a reward from the Dwarven instinct aura, a reward from opening mermaid purses in a POH Aquarium, or as reward from a Challenge Mystery Bag, acquired through Daily Challenges. It's also a possible drop from the rare drop table.

Drop sources

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For an exhaustive list of all known sources for this item, see here.
Source Combat level Quantity Rarity
Adventurer's chestN/A1–8Unknown
Casket (CS Week)N/A24Common
Falador resource bundleN/A1–6Unknown
Glowing crackerN/A10–25Common
Magical chestN/A3–10Varies
Mystery box (Court Cases)N/A30Unknown
Nex: Angel of Death700043Uncommon
Rare drop tableN/A270–330Uncommon
Sandy CasketN/A24Unknown
Sandy Casket (red)N/A24Unknown
Security casket (CS Week)N/A24Common
Winter Weekends (2012)N/A40–100Uncommon



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