So, I'm trying to make a butt ton of obsidian because I think it looks cool, but I can't seem to get my Extra Utilities 2 drums to drain into the Igneous Extruder (Thermal foundation) to make the obsidian.
I've connected them up via pipes on the correct sides and everything but they won't drain.
I've tried draining them into other containers from other mods and stuff, but none of that works.
[Edit]: Here's some screenshots!
Also, sorry for not mentioning this, but I'm running 1.12.2.
Okay, those are fluiducts if I'm not mistaken (not sure which tier, I hope you remembered to use at least a hardened fluiduct for lava), but it doesn't look like you've added any servos to the drum connection, which would explain why it's not pulling the lava out of the drum.
I tried using servos, unless there's more to it than just attaching it to the pipe then I don't think it worked.
The pipes are hardened as well... I think? They transported the lava into them earlier when I pumped it out of the lava lakes.