If by attachment, you mean an atomizer you build from parts, the only one I know of is from Nhaler:
The Ato-Miser
I have seen one at a vapefest, but I do not know how easy it is to disassemble, clean, etc. Its the only one I know of that allows for changing coil, wick, etc. Its a kit which provides for up to 30 attys of varying resistances. I do not know, however, how easy it is to change things once the atty is built. You should contact Drew at Nhaler to get more details.
Another thought is that clearomisers can be completely taken apart and put back together, as can MAP
tanks, which are essentially really big clearomisers, all available at Clouds of Vapor. These are cartomisers that hold liquid, but can also be used for dripping. But you are stuck with the internal electronics of them, unlike the atom-miser.
Unless we know what you intend these for, or why you want to take apart a generally cheap atty, its hard to help you well. Perhaps add more info and repost the question. The vast majority here do not worry about taking these things apart and replacing components, just not worth the time given you can get attys for about $7, but perhaps you have something more involved in mind.
