Glass Stairs are building-blocks cut into an L-shape made of Glass.
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.
To unlock the crafting recipe for Glass Stairs, you will have to create Glass Slabs from ordinary cubic blocks of Glass by simply putting them into a Processor. No crafting recipe has to be unlocked for that.
Glass is made in a Forge (together with Fuel) from Sand that can be found on many Shorelines, in Dunes, all over the floor of Oceans and on sandy Islands as well as around/under some lakes like in Savannahs or oases of Canyons. Collecting Sand does not require any Power Cells.
Glass Stairs can be crafted in your Crafting Menu (default key "Q"), but only after the crafting recipe has been unlocked.
To craft 4 (blocks of) Glass Stairs at once, you'll need
- 2 Glass Slabs made of Glass 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
Since R42 in May 2017, inner and outer corners blocks can be created for these stairs too by putting them into a Processor. No crafting recipes are required for this.