The 278 is not the same diameter, it's smaller than the 20d. Also it doesn't come with a Claisen, but it does have multiple 18mm male outlets to help create different setups. I love it with the UFO, options galore! If you're only wanting one though, I'd say get the 20d b/c you know what you're receiving and you already like it combined with EQ. If you decide later to expand, definitely pick up the 278. Hope this helps!
The 278 is not the same diameter, it's smaller than the 20d. Also it doesn't come with a Claisen, but it does have multiple 18mm male outlets to help create different setups. I love it with the UFO, options galore! If you're only wanting one though, I'd say get the 20d b/c you know what you're receiving and you already like it combined with EQ. If you decide later to expand, definitely pick up the 278. Hope this helps!
Got 3 more glass pieces for $20. Came home with a 6 slit downstem, angled adapter, and the long ass stem.
I can switch out the stem as well as the downstem, if I care to. Have my eye on a $30 downstem that would really pair nice with the flask. But my budget is maxed atm. I do mean this humbly, But for a first time setup, I am impressed with all this glass working for me!
Once I came up with my own solution for the long ass wand, I could play with the variables to get the draw that I wanted.
My Flowermate 1.0 pen vape sits on top of the downstam as if it belongs there. I can walk around the room with it balanced on top. It thinks it is an Arizer Solo when it sits on top of the "Q" pushing out thick plumes of vapor on the first draw. Even with my janky setup, My PAX refused to quit producing vapor. I would let it heat itself twice then draw out blue gassy fumey clouds. I really like the little window that the downstem provides, so I can examine the vapor path.
(Long-Ass-Wand) Having the vapor go through the very top and center of the piece instead of say some sort of Ferris wheel of travel, which takes a lot of the guess work with drag. The neck on my piece has some inside volume above the output, but the stem is designed to have a vacuum hose attached to it, so it compensates for that small negative. So even if you don't buy a d020 you can still use it as a template when choosing something else or modding what you have around.
Not sure if you are confusing it with another type or if it is in the wording? The female 18mm adapter is where the vapor would go in. With say a male connection from a wand or adapter. The vapor collects toward the top and is pulled from the large mouthpiece area pictured. I have seen models that have removable mouthpieces making them even more interchangeable. I think having a wand going into the female connection would be preferable, plus you can always add an adapter without it becoming taller as oppoded to correcting a male connection. Plus that added bonus of using portables with no adapters! I broke the tops off of two pieces already. But to answer your question, you can find one of the reputable dealers on DHgate and try for the best. Or pay more locally in your home country.
Pyrex claisen adapter balanced in such a way that the Solo can sit upside down and share the pathway.That is the setup I use when I really need to get medicated!! Now I use the Ddave parts...you should do a similar thing. You will love it.
@Dr. Soxhlet did you notice that that the very top of the D020 and the very top of the EQ are nearly the same height? 
Sure you have other considerations then me, like making it cat friendly.
1 or 2 more pieces and I'm GTG for GOG. Looks like the solution has already presented itself. Read this page and the few before about the d020-d. Any thought or suggestions to offer HOW to get one would be helpful. Also there is the cheap bubbler thread that talks about this and other pieces. I never owned one. But the design is perfect for a first time vapor bong. Until I find one that has the perc fully attached to the bottom. This is a solid template.
Seen it discussed so much that I'm not even bothering to go buy one. I just 'made' mine instead.
I was thinking of a basic starter kit for EQ enthusiasts. All those things and a package of vape bags plus the D020 and you have all the bases covered.
It gets used for reclaim. Never tried it myself. I have noticed reclaim seems to cling to glass more than tubing. Would it be smart to place it at the very end of a wand for that and other reasons? I actually have a practical use for hemp fibre now. Would I be able to make essential oils with a wand full of fibre? What have others tried? Does vaping hemp have anything +/- health wide? Can anybody recommend?
Plus the tubing that comes with the @DDave kit. I should get around to that.
Have them set side by side like Salt and Pepper shakers. But also practical and a solid mouthpiece.
If even getting adapter parts is a hard find. Having at least one of each 18mm F/F and M/M will help reverse some of your main parts. Think of the adapters and wands as being duel purpose too.
I'd start with the cheap high-quality bubbler thread. Most of the discussions are about DHgate pieces and doing business with them and finding a reputable dealer, avoiding sketchy Chinese business practices, etc.
That will cause your fan to malfunction. I'd clean it as soon as I was done lending it out. New user spillovers and really fine ABV will both cause debris to accumulate in the body. Well at least you got a dub's worth for your troubles.
18mm is going to have the wider volume and tends to have less pinching, generally. But It has more to do with what ever water piece you are using and it's draw stregnth.
