I had a big smoketech eGo cartomizer like this.

Never got a flavor out of it.
So being I'm broke and bored on vacation.. I made this in about 10 mins.

Holds about 2 1/2 ml of fluid,does not leak and is wicking good so far.
I almost got my finger while punching the hole in the cart. but i lived!
All I did was cut the tube down with a kitchen knife.
cut off two pieces from the bottom of the mouthpiece,
Punch the cart, assemble and stick in the mouthpiece.
and fill.

Never got a flavor out of it.
So being I'm broke and bored on vacation.. I made this in about 10 mins.

Holds about 2 1/2 ml of fluid,does not leak and is wicking good so far.
I almost got my finger while punching the hole in the cart. but i lived!
All I did was cut the tube down with a kitchen knife.
cut off two pieces from the bottom of the mouthpiece,
Punch the cart, assemble and stick in the mouthpiece.
and fill.