It's not that easy, I'm afraid. Blood doesn't flow from them very well. One has to cut them in that thing to get it. Well, one has to do that to get any blood IIRC, but villagers are tougher because they refuse to not smelt into emeralds when thrown in there.Decorating my house with blood seems like a noble vocation.
It might be more practical to do it with villager autospawners, railcraft tanks and blood magic though, if that works.
Gelflingsvillagers would look a lot tidier in a tank full of their living essence
Find a way to pump it out, and store it in a tank. A easy tank to make is one you already know how to make; the seared tank. Getting it out without a dedicated fluid transport system isn't easy, but I'm pretty sure that mDyio added Seared Channels for something, and maybe it's passing fluids to such tanks?Okay, to add to the necro here, I do have a question about getting every last drop out of the smeltery...
After crafting some myllenium and cobalt parts for epic... things... I found I have "nuggets" worth of each in the reserves. Is there a way to make a "nugget" cast? I've tried, but no luck.
Just hate seeing those two very thin lines of molten metal I can't use....