@bnrkwest - OK, I've got a couple questions. Been a long time since I used cartos of any kind.
I've got a Smok 3mL UDCT, and it has the slotted bottom to use 45mm flanged cartos with, so the flange catches in the slot. However, most cartos I've bought lately
don't have a flange. So you're saying that U Youde Tank definitely works like their description says...using all those cartos without a flange??
Also, I specifically asked the owner of AlvineCigs to measure her various Boge cartos (which have no flange) for me before I ordered a bunch. She said the Boge
XXL cartos measured 45mm and the XL cartos measured 40mm. So...once I punch the XXL ones I can use them in a tank. But the 40mm ones will just have to be used without a tank, and remain unpunched, right? If I get one of those U Youde tanks you linked to though...the extra tank it comes with is for the short ones that are 35mm that I can punch as well. Correct?