Bedrock Stairs are building-blocks cut into an L-shape made of beige-white blocks.
Usually placed as stairs they will smooth the player-character's movement up and down gradients so no jumping is needed. They can be placed as projections of walls or for other purposes too when being rotated by pressing and holding R (as the default key) while moving the mouse.
Bedrock Stairs can be crafted in your Crafting Menu (default key "Q"), but only after the crafting recipe has been unlocked.
To unlock the crafting recipe for Bedrock Stairs, you will have to craft Bedrock Walls. Additionally to that you will also have to create Bedrock Slabs from blocks of Bedrock Walls by simply putting them into a Processor. No crafting recipe has to be unlocked for that. Using harvested blocks of bedrock in the processor will not give you bedrock slabs, but standard stone slabs.
The crafting recipe for Bedrock Wall is unlocked by mining Bedrock from the Fossil layer with at least a Stone Mining Cell, obtaining Obsidian bars by putting Obsidian Ore into a Forge, and crafting Stacked Stone Walls from ordinary Stone.
8 Bedrock Walls each can then be crafted with 4 (blocks of) Bedrock, 1 Stone Rod made of Stone, Limestone or Bedrock in a Processor and 1x Melted Wax made of Beeswax in a Forge or found in Treasure Chests.
To craft 4 (blocks of) Bedrock Stairs at once, you'll need
- 2 Bedrock Slabs made of Bedrock Wall in a Processor
- 1 Stone Rod made of Stone, Limestone or Bedrock in a Processor
- 2x Melted Wax made of Beeswax in a Forge or looted from Wood Treasure Chests or Stone Treasure Chests