Forge doesn't work

[crafter15 10]

I can't create an underground forge with charcoal. 5 blocks of cobblestone, right-clicking 8 pieces of charcoal (2 stacks gone so far). When I use the Fire Starter, the coal block briefly glows, then transforms into what you see in the screenshots, the interface doesn't open.

 

Here's my forge, very straightforward:

The grass tile is where the chimney goes straight up. Here's the view from the top of the chimney:

[Kittychanley 1,002]

It looks like your chimney might be too far away. Try having it only go 3 blocks horizontal before straight vertical.

[JaySparrow 0]

If i am not mistaken the chimney is too far away from the forge, it has to be within 2 blocks  from the forge.

 

Sorry if what i said is wrong i am still a newby too.

 

JaySparrow.

[crafter15 10]

That must be the issue here, nothing worked until this length:

 

 

I guess the wiki needs some fixing.

[Kittychanley 1,002]

To be fair, the ventilation image on the wiki does explicitly show the only correct chimney shapes, which matches perfectly with your now working forge.

 

 

I will however edit the text that is in relation to this image to make it more obvious that these are your only options.

[crafter15 10]

In that case I misunderstood the instructions. Those pictures appear to be more like guidelines, plus a youtube tutorial mentions that the chimney can have an unlimited height, kinda suggesting the same for the horizontal length.