Do all drip tips screw in or do some just have the rubber O ring? I'm asking because I'm trying to turn some on a lathe and not sure about this lol.
That is wonderful, thank you so much!!No, you won't have to figure out threading. Unless you really want to. lol There are adapters available to convert threaded tips to o-ring tips.
eGo Clearomizer Drip Tip Adapter - MyFreedomSmokes.com