Full bore is referring to the vapor pathway from boiling flask to vacuum pump being relatively unrestricted. This means no hoses on the cow or cold trap, it’s all glass to glass and for the most part the same diameter. This allows the vapor to travel along and condense where you want it to. Swing arms with various temperature condensers and traps to refine your cuts is my preference. I’m liking the look of the stainless steel ones that @AlexSiegel and @pdxcanna have designed:
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