Hmmm, that's a pretty tall order for a VERY low volume item...
I would think maybe the best you could hope for is that Chad gets some time somewhere and makes one for himself and then lists the parts and instructions for how to do it. I'm thinking:
1) They don't do plastics/delrin/whatever. The single drip tips they offer now they get from elsewhere.
2) Metal drip tips are just not a good idea... Get an atty or coil in a cartomizer that sticks up further than normal and it's kind of like putting a spoon in a microwave.
2a) The design and machining of something like that would be very complex. Probably end up being a 3 or 4 piece item?
3) Make something out of flexible plastic tubing and you have durability issues and they would probably have to use surgical tubing material for liability concerns and there would be a lot of returns, etc.
4) Did I mention that it would be really low volume? Don't forget that the DBSB was just sort of made as a one (few) of a kind novelty item. Then they got pressured to making a couple runs of them. It's not going to be cost effective to put the design and manufacturing effort into making something that would meet the standards to be sold commercially and only a few pieces. (by the way, how much would you expect to pay for something like that? $30? maybe more?)
I could be completely wrong but I wouldn't be holding my breath.
I can't believe that one of you ingenius (and possibly enterprising) owners haven't come up with a solution yet. I'm almost inspired to make one and I don't even own a DBSB. A "Y" tube would be most elegant but 2 90* elbows and a "T" connector would be a lot easier. I mean, you know the diameter of the atomizer. I think Chad said they're 1/2"? center to center. but if you're using silicon tubing it would be simple to size. So you'd want to get about 1' of thick walled silicon tubing with an inner diameter slightly (1mm? maybe 0.5mm?) smaller than the outer diameter of the atomizer/cartomizer you're using, 2 90* elbows, 1 "T" connector. Cut tubing to length and you're set. You could probably even do without the 90* elbows but you would lose a lot of rigidity and it might end up too floppy.
5) oh yea, different atomizers/cartomizers for different folks... might even have to have different models with even less volume each.
[Edit] On second thought you'll probably have to forget any of the connectors. center-to-center is too close. You could probaby get creative with an exacto blade and with an angle cut you could splice the two tubes together. I speced out some silicon tubing that might work (might be too thick for the space between the outside of the two atomizers) on
www.smallparts.com. Smallest quantity you can order would be 100' for about $25.
