I can't put my clay molds in a pit kiln

[dense moon]

i tried to put my clay molds into a pit kiln but it doesn't work, help.

[junior ingot]

How are you doing it?

[dense moon]

well : i dug a two block hole and with my clay molds i shift right click the ground but it doesn't work

[junior ingot]

You need to use V

And it should be 1 block deep, it's all explained in the field guide

[dense moon]

while shift right clicking ??

[ocean heart]

V

Some other key is also bound to v so change that