You can make a ladder out of stone / iron and steel but not stone, clay or soil.

The ladders back must be attached to a solid surface or a block, You can rotate the ladder to the correct orientation using the [ ] bracket default keys ( if you haven't changed them ).

So you can use them inside a building but not against soil.

I always can't see how i can create ladder.

There are no option in shapes to build ladder instead of block.

Hallo,
ich benutze Holz für Leitern.
Holz in die Hand nehmen
einen Block platzieren.
Taste F drücken und aus den Blaupausen Leitern auswählen.
Am Block (Umriss wird blau) andocken.
Ist der Umriss rot ist noch Gestein oder anderes Material im weg einfachen mit geeigneten Werkzeug abbauen, dann erneut probieren die Leiter zu platzieren wenn Umriss blau , kann die Leiter platziert werden.

LG Suzi

--------------------------- google translator ------------------------------------

Hello,
I use wood for ladders.
pick up wood
place a block.
Press the F key and select ladders from the blueprints.
Dock to the block (outline turns blue).
If the outline is red, there is still rock, or other material in the way, simply remove it with a suitable tool, then try to place the ladder again, if the outline is blue, the ladder can be placed.

br Suzi

Some materials don't support ladders, I think Wood, Iron and steel are the only ones that support ladders.

I didn't test with wood.

Retrying now it work with wood only not with iron strip and steel.

Hmm, I will look at fixing that.