Thanks everyone for all the answers. I think it's coming out nicely. Should be done in a couple days

https://prnt.sc/GFCu210bQCGJ

Wooden part is storage.

https://prnt.sc/pAdnZ_nkyApi

Chimney turned out bigger than expected. I tried to make it smaller but it wasn't enough. Will do some decorations to make it cooler.

https://prnt.sc/Og4ywzbfgFF0

I always do my hearths and chimneys in the middle of the house, through all the floors. I use the poles to make a frame. Frame it in with wood panels. I then extend above the main roof line, and add its own roof tiles to keep the rain out of it, and allow the smoke to escape.

Not to the hearth question, but a very neat house model. Post a snap when you are done as I would like to see how it came out.

Make a "hood" above the hearth to catch the smoke, and leave one corner of it unroofed for the smoke to escape. I think it also looks nice. The next setup I want to try is having the hearth almost totally enclosed with a "window" to reach cauldrons and cooking stations

To be honest just about any way you can conceive of you should be able to build as long as you have the materials for it.

This is the 2nd floor hearth in one of the bed rooms in my multiplayer save.
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006610
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006662
3rd floor plus attic interior chimney
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006709
Exterior chimney cap
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006812
Ground floor cooking hearth has a hood over it
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006990
The ovens are side vented
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007039
3rd floor view compresses the chimney for the heath
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007227
Exterior view of the chimney caps for the hearth and ovens
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007431
Blast furnace, kiln, and smelter all have hoods over them
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006914
The 3rd floor chimney for the blast furnace and smelter go straight up since they are 2x2 but the 3rd floor chimney for the kiln compresses since its 3x3
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007180

The roof caps for those look like this
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007400
On upper floors you can hide chimneys inside interior walls
https://steamcommunity.com/sharedfiles/filedetails/?id=2923016073
and build decorative/functional rooms between those interior walls used to hide the chimneys
https://steamcommunity.com/sharedfiles/filedetails/?id=2923016112
https://steamcommunity.com/sharedfiles/filedetails/?id=2923016151
You could build your wooden add on to your stone tower similar to the way that I build my 2nd floor balcony
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006749

You can build just about anything you can conceive of. Just experiment around until you get something that looks good to you. I'm not even all that creative but I took a few ideas from homes and other places that I have been and just kind of hacked at it until I got something I was happy with.

Those chimneys aren't actually letting any smoke out in your screenies though. The roof piece over them is too low. I'd bet only a rare few smoke particles escape.

You don't have to let any smoke out. It will dissipate with enough space above the fire.

I really like this video:

https://www.youtube.com/watch?v=i5wvMTLYxWI

Originally posted by knighttemplar1960:

To be honest just about any way you can conceive of you should be able to build as long as you have the materials for it.

This is the 2nd floor hearth in one of the bed rooms in my multiplayer save.
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006610
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006662
3rd floor plus attic interior chimney
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006709
Exterior chimney cap
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006812
Ground floor cooking hearth has a hood over it
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006990
The ovens are side vented
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007039
3rd floor view compresses the chimney for the heath
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007227
Exterior view of the chimney caps for the hearth and ovens
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007431
Blast furnace, kiln, and smelter all have hoods over them
https://steamcommunity.com/sharedfiles/filedetails/?id=2923006914
The 3rd floor chimney for the blast furnace and smelter go straight up since they are 2x2 but the 3rd floor chimney for the kiln compresses since its 3x3
https://steamcommunity.com/sharedfiles/filedetails/?id=2923007180

I need to know how do add screen shots to comments? I seem to not have that option?

Originally posted by Honorable_D:

Those chimneys aren't actually letting any smoke out in your screenies though. The roof piece over them is too low. I'd bet only a rare few smoke particles escape.

Actually they are. The chimneys that have fires in them currently are clearly venting smoke. The ovens, smelter, kiln, and blast furnace weren't in use at the time I took the screen shots so no smoke venting from those.

Originally posted by Godsmutant:

I need to know how do add screen shots to comments? I seem to not have that option?

https://steamcommunity.com/discussions/forum/1/828937545932361086/)

Originally posted by knighttemplar1960:

Originally posted by Godsmutant:

I need to know how do add screen shots to comments? I seem to not have that option?

https://steamcommunity.com/discussions/forum/1/828937545932361086/)

Thanks

You could also do the middle of the building.. I've seen a few homesteads with the hearth or two in the middle and then they just have the chimney that goes all the way up through however many floors they have.

You can do it with various building pieces, wooden roofs probably being most ideal for the task, but I guess you are thinking of stone. Combining the stone arch parts in various angles should do the trick, but combining the utility of cooking facilities (there are quite a few of them now) with aesthetics is up to you.

I always like to make it go essentially sideways outside the first floor like a vent, kind of...that way I can build my bed right above or really close to the fires on the second floor, and I'm always close to the fire buff plus close to where I cook my food.