Assuming you have the know how to work with plastics, have the tools to work with the plastics and are willing to order scratch for materials then yes, this is a product that you could simply make yourself.
But then again, if you have the know how to work with wood, have the tools to work with wood and are willing to order scratch for materials, there is no real need to go to Ikea either.
The beauty with this particular tank (and Ive tried 7 different types of tanks for various atty types) is that it is both affordable and it works (as in, it doesn't require syringes, can be filled in 30 seconds, allows the carto to flow well without clogging or becoming flooded, holds a reasonable amnt of liquid - mine holds 3 ml so I only need to fill once at the start of the day and a second time towards the end of my work day, doesn't leak, supports drip tips, easily assembled / disassembled for cleaning, will work on just about any mod on the market, etc.).
I believe that this is the best ecig innovation on the market. I have no qualms about saying that this tank is more valuable to me than the Provari unit I use with it.
This tank ($30), 4 x slotted 2 ohm LR cartos ($10), an 18650 battery mod (a Silver Bullet costs $85) w/ 2 batteries (2 x $10=$20) & charger ($15), and a 180 ml bottle of liquid from Bluemist ($35) and you are set for one month of pure ecig bliss and I really cant see anything else you could possibly want... All of this for less than $200 for the first month - GUARANTEED less than analog smokes (if you are a pack a day smoker) and each successive month, you just need 4 more cartos ($10) and another bottle of eliquid ($35) for less than $50 a month the first month.
This tank COMPLETES the ecig experience. Its the last piece of the puzzle in my mind. What more can we really ask for from an ecig? Fill it twice a day, vape all day, good battery life, lots of vapor.
I dunno, the last 3 weeks, I have had far too many Vap-O-gasms to count (and the best part is, there is no mess afterwards...) and this tank was the last piece to that pure bliss I have been looking for.
Hmm...maybe I went too far. Ill leave it at this, if you dont have one of these tanks and this thing will benefit you, this is a must have product. If you prefer filling every 20 minutes or dripping every 3 minutes, well, you shouldnt be looking at tanks in the first place...