seregheru said earlier that "To combine two pipes use an extender - the extender ensures that both inputs are credited to the same face of the attached pipe section." - is that not correct?
It is correct, but it might end up in issues. Not sure what kind of issues but it can happen.
By the way I added an easy Crucible Fuel calculation to https://gregtech.overminddl1.c…regtech_1.7.10/earlygame/ this Page. Easy if you can multiply and divide Stuff that is.