Whew... finally managed to make a canning machine. I thought the hard part was getting the T1 circuit, but it took a ton of work after that, wow. So now, how do you make sure you insert only the required amount of fluid to can, since you can't get excess back out? For instance, if I want to make a BIC, I need to insert only 1000L of butane, but if my drum has more than that, it will all go in, and then there is no way to get the extra back out.
For most machines, you can use a tap to extract any fluid they contain. Taps work on more than just tanks and barrels.
Also, if you are needing exactly 1000mb, use a universal cell to fill the machine. No extra then that you need to remove.