The Grinding Stones are a base station you unlock through the Alchemist. Once placed, you feed them raw materials and they return refined versions, turning Bones into Bonemeal, Wheat Grains into Flour, critter shells into Chitin Powder, and several other ingredients. Their description reads, “A simple setup for basic grinding work. Especially good for hard ingredients.”
Quick answer: Save the Alchemist and take him to your base; there, make Grinding Stones from 10 Flintstone and 15 Stone.
Craft the Grinding Stones at the Alchemist
The recipe lives with the Alchemist, so you need him settled at your base before the Grinding Stones become available. Rescuing the Alchemist is the gate here; after that the crafting itself is quick.
What the Grinding Stones make
Each recipe takes a set number of inputs and gives back a set number of outputs after a fixed time.
| Recipe | Output | Time |
|---|---|---|
| 2 Bones | 3 Bonemeal | 60 seconds |
| 3 Charcoal | 3 Coal Powder | 90 seconds |
| 3 Critter Parts or Critter Carapace | 3 Chitin Powder | 150 seconds |
| 3 Wheat Grains | 3 Flour | 300 seconds |
| 1 Obsidian | 1 Obsidian Dust | 480 seconds |
| 1 Silver Bars | 1 Silver Dust | 480 seconds |
| 1 Fossilized Bone | 3 Fossilized Bone Dust | 600 seconds |
Bonemeal is “Useful for alchemical and magical purposes.” Coal Powder is “Ground up coals, creating a highly flammable powder.” Chitin Powder is a “Fine powder made from grinding critter carapaces.” Flour is “Flour that can be created by grinding Wheat Grains to dust.” You can also work with Obsidian, Silver Bars, and Fossilized Bone for their respective dusts.
How to make Coal Powder
Coal Powder is described in-game as “Ground up coals, creating a highly flammable powder.” Despite the name, it is ground from Charcoal, not Coal, on the Grinding Stones.
Coal Powder goes into 11 recipes across five crafting stations, and the Shroud Meteor and Eternal Shroud Meteor cost the most at 20 Coal Powder each.
| Station | Makes | Coal Powder | Other materials |
|---|---|---|---|
| Laboratory | Black Powder x1 | 2 | 7 Nitrate, 1 Sulfur |
| Laboratory | Enshrouded Oil x5 | 5 | 5 Shroud Particles, 5 Brittle Shroud Flakes, 1 Sulfur |
| Alchemist | Greater Antidote x3 | 1 | 1 Poison Sack, 3 Shroud Vapor, 1 Wolfsbane |
| Alchemist | Light Burst x50 | 5 | 5 Sulfur, 5 Lapislazuli, 1 Mist of a Fell Sicklescythe |
| Alchemist | Shroud Meteor x50 | 20 | 5 Nitrate, 20 Stone, 5 Sulfur, 1 Mist of a Fell Sicklescythe |
| Alchemist | Eternal Shroud Meteor x1 | 20 | 4 Bursting Fell Heart, 20 Sulfur, 20 Cinder Rock, 4 Shroud Relic |
| Blacksmith | Watering Can x1 | 1 | 4 Charcoal, 6 Metal Scraps |
| Ectoplasm Press | Excellent Ectoplasm x10 | 10 | 10 Ectoplasm Crystal, 10 Torn Cloth, 1 Fabric |
| Coloring Station | Village Oak x5 | 1 | 1 Shroud Liquid, 2 Springlands Dirt, 2 Penny Bun |
| Coloring Station | Polished Stone x5 | 1 | 1 Shroud Liquid, 2 Springlands Dirt, 2 Bonemeal |
| Coloring Station | Windy Fields x5 | 2 | 1 Shroud Liquid, 2 Bonemeal, 1 Penny Bun |
Picking up Coal Powder also reveals the Enshrouded Oil recipe at the Laboratory.
Grind region rubble
The Grinding Stones also produce rubble for each region. The pattern is the same everywhere: 1 Rubble plus 5 of the region’s stone plus its dirt or sand makes 10 of that region’s rubble in 70 to 80 seconds.
| Region | Stone | Dirt or sand |
|---|---|---|
| Springlands | Stone | Springlands Dirt |
| Revelwood | Revelwood Stone | Revelwood Dirt |
| Nomad Highlands | Limestone | Nomad Highlands Dirt |
| Blackmire | Blackmire Stone | Blackmire Dirt |
| Kindlewastes | Sandstone | sand |
| Veilwater Basin | Shell Limestone | Veilwater Basin Dirt |
| Cinder’s Cradle | Cinder Rock | Cinder’s Cradle Dirt |
Upgrade to the Mill
The Mill is the upgrade to the Grinding Stones, described in-game as “A mill that can be used to grind materials to a fine powder.” You unlock it through the Alchemist’s quest “Obtaining A Mill“.
After your first Mill, the Alchemist can make more Improved Millstones from 30 Shell Limestone and 15 Flintstone, which requires the Alchemy Station.
Three recipes can be made on both stations, and the Mill either finishes them faster or gives more output, as the table below shows.
| Output | Input | Grinding Stones | Mill |
|---|---|---|---|
| Obsidian Dust | 1 Obsidian | 1 in 480 seconds | 1 in 240 seconds |
| Silver Dust | 1 Silver Bars | 1 in 480 seconds | 1 in 240 seconds |
| Fossilized Bone Dust | 1 Fossilized Bone | 3 in 600 seconds | 5 in 300 seconds |
Only the Mill grinds Iron Dust, Gold Dust, Aquamarine Dust, Basalt Dust, Diamond Dust, Moonstone Dust, Gleam Root Dust, Piscine Ivory Dust, Sparkling Dust, Mother-Of-Pearl and Ground Coffee Beans. The Mill does not make Bonemeal, Coal Powder, Chitin Powder, Flour or any region rubble, so keep your Grinding Stones for those.
