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Making planks for profit: sawmill and Plank Make
Buy logs and pay the sawmill operator to turn them into planks, or cast Plank Make on the Lunar spellbook. Construction trainers buy the planks. Mahogany plank (sawmill) is the best right now at +329 gp per plank made, about +923,832 gp an hour after GE tax. At an assumed 2,808 planks made an hour (source below), 5 of the 8 options on this page make a profit after tax at current prices. Inputs are priced at instant buy and outputs at instant sell.
Data age: the oldest price used here is from a trade 2m ago. Prices refresh every minute.
Every option, priced now
| Option | Levels | Cost / action | Kept / action | Profit / action | Profit / hour (est.) | Per 4h buy limit | Output vol / 24h |
|---|---|---|---|---|---|---|---|
| Mahogany plank (sawmill) | None | 1,612 | 1,941 | +329 | +923,832 | +3,619,000 on 11,000 | 6,680,818 |
| Oak plank (sawmill) | None | 283 | 489 | +206 | +578,448 | +3,090,000 on 15,000 | 4,141,191 |
| Teak plank (sawmill) | None | 680 | 838 | +158 | +443,664 | +2,054,000 on 13,000 | 1,972,630 |
| Mahogany plank (Plank Make) | Magic 86 | 1,537 | 1,941 | +404 | +387,840 | +4,444,000 on 11,000 | 6,680,818 |
| Plank (sawmill) | None | 123 | 129 | +6 | +16,848 | +90,000 on 15,000 | 511,487 |
| Teak plank (Plank Make) | Magic 86 | 905 | 838 | -67 | -64,320 | -837,500 on 12,500 | 1,972,630 |
| Oak plank (Plank Make) | Magic 86 | 583 | 489 | -94 | -90,240 | -1,175,000 on 12,500 | 4,141,191 |
| Plank (Plank Make) | Magic 86 | 468 | 129 | -339 | -325,440 | -4,237,500 on 12,500 | 511,487 |
Options whose prices are more than 6 hours old are left out. Cost per action is the inputs at instant-buy plus any NPC fee. Kept per action is the outputs at instant-sell minus the 2% GE tax. The 4h column is how many actions the tightest input buy limit allows every 4 hours, and what that many earn.
Assumptions
Sawmill: 2,808 planks per hour (104 runs of 27 logs at the Auburnvale sawmill). Plank Make: 960 casts per hour. Both rates are from the OSRS Wiki guides; the earth runes come from a staff and are not counted.
Source: OSRS Wiki: Making mahogany planks, OSRS Wiki: Casting Plank Make. Per-hour figures are estimates: real rates depend on your clicks, banking and connection.
Requirements: Sawmill: none (Children of the Sun for the Auburnvale sawmill). Plank Make: Magic 86, Dream Mentor, an earth staff.
Inputs and outputs, with live prices
Mahogany plank (sawmill)
 Mahogany logs | 1 × 112 | -112 |
| NPC fee | -1,500 | |
 Mahogany plank | 1 × (1,980 - 39 tax) | +1,941 |
| Profit per plank made | +329 |
No levels needed. Rate assumed: 2,808 per hour. Mahogany logs buy limit allows 11,000 per 4h, about 3.9 hours of work.
Oak plank (sawmill)
 Oak logs | 1 × 33 | -33 |
| NPC fee | -250 | |
 Oak plank | 1 × (498 - 9 tax) | +489 |
| Profit per plank made | +206 |
No levels needed. Rate assumed: 2,808 per hour. Oak logs buy limit allows 15,000 per 4h, about 5.3 hours of work.
Teak plank (sawmill)
 Teak logs | 1 × 180 | -180 |
| NPC fee | -500 | |
 Teak plank | 1 × (855 - 17 tax) | +838 |
| Profit per plank made | +158 |
No levels needed. Rate assumed: 2,808 per hour. Teak logs buy limit allows 13,000 per 4h, about 4.6 hours of work.
Mahogany plank (Plank Make)
| Mahogany logs | 1 × 112 | -112 |
 Astral rune | 2 × 120 | -240 |
 Nature rune | 1 × 135 | -135 |
| NPC fee | -1,050 | |
| Mahogany plank | 1 × (1,980 - 39 tax) | +1,941 |
| Profit per plank made | +404 |
Needs Magic 86. Rate assumed: 960 per hour. Mahogany logs buy limit allows 11,000 per 4h, about 11.5 hours of work.
Plank (sawmill)
 Logs | 1 × 23 | -23 |
| NPC fee | -100 | |
 Plank | 1 × (131 - 2 tax) | +129 |
| Profit per plank made | +6 |
No levels needed. Rate assumed: 2,808 per hour. Logs buy limit allows 15,000 per 4h, about 5.3 hours of work.
Teak plank (Plank Make)
| Teak logs | 1 × 180 | -180 |
| Astral rune | 2 × 120 | -240 |
| Nature rune | 1 × 135 | -135 |
| NPC fee | -350 | |
| Teak plank | 1 × (855 - 17 tax) | +838 |
| Profit per plank made | -67 |
Needs Magic 86. Rate assumed: 960 per hour. Astral rune buy limit allows 12,500 per 4h, about 13.0 hours of work.
Oak plank (Plank Make)
| Oak logs | 1 × 33 | -33 |
| Astral rune | 2 × 120 | -240 |
| Nature rune | 1 × 135 | -135 |
| NPC fee | -175 | |
| Oak plank | 1 × (498 - 9 tax) | +489 |
| Profit per plank made | -94 |
Needs Magic 86. Rate assumed: 960 per hour. Astral rune buy limit allows 12,500 per 4h, about 13.0 hours of work.
Plank (Plank Make)
| Logs | 1 × 23 | -23 |
| Astral rune | 2 × 120 | -240 |
| Nature rune | 1 × 135 | -135 |
| NPC fee | -70 | |
| Plank | 1 × (131 - 2 tax) | +129 |
| Profit per plank made | -339 |
Needs Magic 86. Rate assumed: 960 per hour. Astral rune buy limit allows 12,500 per 4h, about 13.0 hours of work.
Questions
Is making planks profitable right now?
Yes. Mahogany plank (sawmill) is the best right now at +329 gp per plank made, about +923,832 gp an hour after GE tax.
How much gp per hour does making planks make?
About +923,832 gp an hour with Mahogany plank (sawmill), assuming 2,808 planks made an hour. Sawmill: 2,808 planks per hour (104 runs of 27 logs at the Auburnvale sawmill). Plank Make: 960 casts per hour. Both rates are from the OSRS Wiki guides; the earth runes come from a staff and are not counted. This is an estimate at current prices, not a promise.
What levels do you need for making planks?
From None up to Magic 86, depending on the option. Sawmill: none (Children of the Sun for the Auburnvale sawmill). Plank Make: Magic 86, Dream Mentor, an earth staff.
How many planks made does the GE buy limit allow?
For Mahogany plank (sawmill), the tightest input buy limit allows 11,000 planks made every 4 hours, worth +3,619,000 gp at current prices.
Offerbook prices methods from live Grand Exchange data; it never plays the game for you. gp only, and no promise of income: prices move, and mahogany plank (sawmill) at +329 gp per plank made can change within minutes. See all methods.