Factorio Forums

Not sure if related to: viewtopic.php?t=134309
I did post it anyway since this is not an issue of "sharing" fluid evenly, it is blocking the Tesla Turret to be built even though there is more than enough fluid in the pipeline.

What did you do?

I use one pipeline for Electrolyte on Fulgora, the pipeline is about 22% filled What happened?

All consumers which need a small amount of electrolyte are running, but the Tesla Turret which needs 500 electrolyte per craft does not fill its input buffer with the available fluid but stays at ~332, rising a bit, dropping a bit.

What did you expect to happen instead? It might be obvious to you, but do it anyway!

I expect that the EM plant is using the available Electrolyte in the pipe to craft a Tesla Turret. Pipeline contents say 790, Tesla Turret needs 500, so should be good to go, no?

Seems like it can only fill its input to the "level" of the pipeline. I guess the input buffer is around 1500 for the Tesla Turret recipe and if there is less than 33% in the pipeline it will not start crafting, no matter how much fluid is in there. (332 is about 22% of 1500, so the numbers would fit).

Does it happen always, once, or sometimes?

Always. I did a test in editor where I built a tank and an infinity pipe which puts the fluid level to exactly 33%. This means there is >9000 Electrolyte in the system but the EM plant will still not build the Tesla Turret because it only "sees" a fluid level of 495.

Yeah I noticed that the internal buffers of machines that have fluid passthrough are now part of the pipeline itself. Not sure if that's intended or not.

I'm pretty sure this is what is being discussed at viewtopic.php?p=696045#p696045​​​ —the question is whether fluid should be distributed throughout the pipeline or whether one machine should be able to hog enough to actually produce something.

I am also encountering this issue on Fulgora, mainly with Holmium solutions, where my supply is generally low currently and my fluid bus for Holmium solution ist generally empty.

For me, only Holmium plates are beeing produced, as assemblers are draining the pipe, before the pipe filling % is high enough to produce electrolyte or Electromagnetic science.

Personally, i believe the new behavior for pass-through entities is largely dysfunctional and not a quality of life upgrade, what this patch is said to mostly contain. It makes fluid buses virtually unusable unless your have guaranteed back pressure.

Buschkopf65 wrote: Mon Jun 29, 2026 8:26 pm For me, only Holmium plates are beeing produced, as assemblers are draining the pipe, before the pipe filling % is high enough to produce electrolyte or Electromagnetic science.

Oh gosh! I was lucky enough to circumvent this issue accidentally since I connected Holmium plate assembler and Electrolyte EM-plant to different output ports of the chemplant. I keep forgetting that those while divide the output between them when doing that which was not intended but it helps my factory a lot in this small stage.

Buschkopf65 wrote: Mon Jun 29, 2026 8:26 pm I am also encountering this issue on Fulgora, mainly with Holmium solutions, where my supply is generally low currently and my fluid bus for Holmium solution ist generally empty.

For me, only Holmium plates are beeing produced, as assemblers are draining the pipe, before the pipe filling % is high enough to produce electrolyte or Electromagnetic science.

Personally, i believe the new behavior for pass-through entities is largely dysfunctional and not a quality of life upgrade, what this patch is said to mostly contain. It makes fluid buses virtually unusable unless your have guaranteed back pressure.

+1
Even the machines with 1 fluid port marked as input/output cannot craft as before.
Look at Electromagnetic science pack: electrolyte and holmium solution only inputs not passthrough, but acts as pipeline and not filling internal buffer, especially if holmium plates foundry connected to the same holmium solution pipe (foundry have only input type fluid port and drains all pipeline contents).
Need a rework of internal fluid buffer filling.