I had a look at the lua files, and found that you've implemented the elevated pipes as a combination of a furnace and a fluid tank. I don't quite follow why that is. Not criticism or anything, just curious as to why not use the existing underground pipe system.

when you connect a pipe to the bottom of the tower the vertical pipe within the frame needs to render, this is done through working visualizations and only crafters/furnaces can have those, the fluid tank is merely for the alt mode icon, also extending the underground pipe prototype leads to trouble dragging in all 4 directions and if you hold and drag it'd place two pairs down each time, all things considered it was the most user friendly / stable to go for a furnace.

Got it, thank you. As long as it doesn't cause performance issues (which it shouldn't, given there are no on_tick scripts) or throttles throughput (since machine inventory has a hard limit of 100 fluid/tick to empty or fill) then I'm perfectly fine with it :)

that might be true for input/output connections but the furnace only uses bidirectional connections and i don't believe they have a flow limit as they become part of the entire pipeline segment.

but yeah im quite satisfied the mod uses no on_tick scripts to check for connections constantly, it being a furnace entity really helps in that regard.