I think, aside from keeping the inner cap in place during filling, the glue was intended to keep people from pulling the apart to protect the design.
What? If you mean the cap is intended to seal off the top of the resevoir so the juice only enters the cup via the wick, then I agree. As someone mentioned earlier the caps get loose with repeated removal and replacement. If the cap doesn't seal against the top of the resevoir and cup then it's going to leak.
Unfortunately, since they have been pulled apart an unnamed company has already copied the e2 at the request of a US company that will also remain unnamed. There are some legal issues ensuing due to patent infringement.
[PR note] "Unfortunately"? How? This could be the best thing ever for the consumer. and you wonder why people think you're promoting the company? Do you think it unfortunate technically? or financially? I'm not a stock holder so I'm not so interested in the financial part.
Badkolo has been told the same thing I have, the glue is changing soon to something that is more heat tolerant and doesn't have the smell. I think hot glue would be better as it is more heat tolerant
It's not named "hot" glue for nothing. You heat it up to make it liquid so it flows? Now that I think of it, a hot glue gun might make a really good PV requiring only a little bit of modfication

You already have a resevoir, heater, liquid path...
and I don't think it would break down in the liquid, but there's probably a better glue out there and I'm sure they're accounting for this.
You think it's breaking down in the liquid now?
I don't understand why you guys think these are tinkerers cobbing something together on their hobby bench in the basement. They have real live hardware, mechanical, manufacturing engineers. They know what the material properties are of the stuff they're using. They test them in the actual application. You need to get a grip on the fact that their e-cig stuff is a multi-multi-million dollar business. The point is that a fraction of a cent per part makes hundreds of thousands of dollars difference in the profit margin.
All of this should be ironed out soon and hopefully we'll see the perfect E2 cartos.
Even more perfect than the last perfect ones and the perfect ones before. How about just calling these prototypes?
[PR note] Maybe it's just the way you phrase things that's getting you your bad rap. "All of this should be ironed out soon"...
How do you know that? Why would you say that? Don't you agree it sounds as if you're speaking PR for the company?
We know they're working on it. We know they're cranking out revision after revision. This is where I think copy cats could be a huge benefit. A little competition might inspire them all to take bigger steps. Right now it seems like "Let's move the bar a minimal amount and see if they'll buy this one. If they don't like it we'll still be able to move the stock from this run before or with the stock from the next one so there isn't much risk"
Why do you insist that I'm pulling PR for this company?!?!?! Honestly I don't get it?! I haven't said anything any different than badkolo has, yet I'm the one doing PR? Really? Come ON!
Lol, ummm, well... Actually, it now looks like you've been promoted and have a whole PR department

with Bad and Banjo as project managers. Whether it's that way or not it can have that appearance. It's like a cheer leading organization. Practically every single post has some sort of non-technical rah rah for the company or excuse for stuff that happened.
I'm guessing there are a whole lot of people who tried these and didn't like them but aren't going to post up because they're going to get piled on by you and your department. "You obviously didn't try hard enough or did something wrong that we've already told you how to fix. Everybody else thinks they're perfect. Answer these 13 interrogation question and we'll tell you how you screwed up".
You haven't noticed that you guys refer to yourselves as "we"?
Yes, I can imagine that it may just be a case of seeing something that you would really like to see come to market and promoting it solely for that reason.
Feel free to jump on me, I can take it

.
Pre-emptively,
I REALLY like this idea/design.
I REALLY want to see these if they can be made to work more generally and if the final product can be manufactured consistently for a reasonable price. No, I doubt these will be the holy grail now and forever more. I expect there will be new unimagined advancements in the future but it's always nice to see things moving forwards.
I just find the apologizing for the company, the positioning of the company as if they are doing us some sort of humanitarian favor and that we should support their efforts by investing in their R&D and sucking up their business costs; in what's supposed to be an unbiased discussion thread a bit out of place.
And how come, after ALL our hard work in R&D and as testers, they can't seem to see their way to kick back just a little bit and become supporting supplier/vendor of ECF?
we love you, lgd
and value your disclaimers but please remember nav is kind of sensitive when it comes to the pr issue,
well... if it walks like a duck, and it quacks like a duck... (no, not that duck -- lol, I crack myself up

)
Nav, you might have no vested interest in the company at all, but it seems more than a few have gotten that impression. I would suggest looking at how that happened. Doesn't matter if it's true or not. but saying "Honestly, I just don't get it" sounds disingenuous.
What's wrong with the simple silicone caps like in the KR808? No glue, no need for a needle. The extra long silicone mouthpiece can hold the other cap in place to prevent leaking (which it seems like it does anyway). Why complicate it more, or am I missing something?
The inner cap has to seal the top of the resevoir and isolate the juice from the cup so the only path for the liquid into the cup is via the wick.
I think if it were a soft rubber compression gasket like you suggest it might be prone to being replaced improperly and/or compressing over time to where it didn't seal. If it was really soft making it really easy to get out and back in it would be easy to wrinkle it or have it stick to the side of the tube or have it catch on an edge pulling up one side, or squished in crooked, etc.
If it were firmer material then it would be harder to remove and replace and more prone to compress over time and become ineffective.
Having a bunch of specialized tools and the skills to use them wouldn't work for a consumer product... people can't even handle the needle...
So that's probably why they glue them in with it sealed.