The column still or continuous stills developed by Aeneas Coffey back in the 1800’s . What we have is still the boiler of the Pot Still , but then instead of the vapor being diverted to a thumper, it is moved to an Column. The Column or copper tube has plates, that are copper filled with holes or with copper scrubbers or Boiling chips. These “plates” make the vapor condense on the leading edge and then the liquid has to vaporize again. The thought is, each time the liquid goes from its liquid form to vapor you make a cleaner and cleaner spirit. Andrew’s hope was to achieve a spirit that is 180 proof or above, clean and pure. My hats off, His design improvements worked. And with his designs people have put many columns side by side by side and they call it triple distilled. The problem with side by side distillation is that the distillate never really gets a chance to cool down, thus forcing some of those low fuels through the system and not allowing you a chance to separate them. I created the Treetop with the cap removable so you can add or remove the “plates” if you want to have that cleaner spirit. With the “plates” removed it behaves like a pot still, but with the tower height and diameter the fuel proof is much higher.