1)You take two cigarettes 2) cut the filter off of one 3) remove a bit of tobacco from one side of each cig with a pair of tweezers. 4) fit the one cig with no filter into the end of the other. They should overlap by about a centimeter. 5) if you use a regular sized 100 like I used to you end up with a nice thick 150mm cig almost as big as the Nat Shermans in the videos One advantage is you can use your favorite brand of cigarette and it will taste just fine. Menthol works too. You can smoke the whole cig!