using a mesh tile works wonders. but I havent scaled up production yet so I will let you know if its not enough.

Do you mean airflow tiles? Yeah, I tried a build using them under the direct input in a steam room to split up the output. That works well. I'm still working on recreating some things in sandbox mode for some examples.

My main problem with the Plasma Furnace has been when I've tried to use the piped output at times. For certain productions it almost always ends up forming solid tiles on top of the building, entombing it, causing overheat damage and requiring it to be dug out. It's as if the output can't be removed fast enough before it cools and solidifies. Piping materials seem to make no difference.
I'm not sure if it's due to the ambient temperature or if there is a solution to this.

it would be nice if there was a way to modify that solidification value, so Ronivan could solve this. In the post i've mentioned in the comments, it is mentioned that the values are in a yaml file. Maybe it can be edited through a mod? I don't know

Yeah I understand the molten state process is not perfect, specially regarding Aluminum and Tungsten. Also some mass goes missing sometimes and I don't know why. Good to know we are having this discussion, although I'm a bit late on it due to my own issues here. Perhaps a reword on the smelting furnace process should be thought.

There is a problem using piped output. Molten metal inside the Plasma Furnace (before it all flows into pipe) interact with gases in bottom-left tile of PF. Like molten glass in vanilla glass forge. It may cause a bug, when metal solidifies to tile block right over PF; disables it and warms up all around. Especially during melting tungsten, as molten tungsten from PF has temerature close to phase transition. Also even with direct output tungsten instantly solidifies to tile block in cooling shamber (under PF), no matter how slow it cools down.

This is an known issue. Unfortunately this will happen sometimes with Molten Aluminum and Molten Tungsten.

I am not 100% sure about this, but can't this mod alleviate the issue?
"Debris Melts to Debris"
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2570834434

I'm not particular sure since I never used it before. It is worth a try.

引用自 claustro：

I am not 100% sure about this, but can't this mod alleviate the issue?
"Debris Melts to Debris"

I've used that mod and it doesn't apply to this situation. It's for things that transition to other elements, like heating slime into dirt.