This is a variation on this very clever mod:
http://www.e-cigarette-forum.com/forum/cartridge-mods/46294-must-try-adm-auto-drip-mod.html so I thought I should post this one in a seperate thread.
There was some concern about the metal spring corroding. With a 510, you can use the natural ledge on the inside, but that sits pretty far into the reservoir. Or you can special order plastic springs. This method eliminates the metal and also works on carts that are smooth on the interior. It also uses everyday items. This also incorporates Scottbee's notching idea & uses a springier filler like Scotch Brite blue non-scratch scrub pads (one without abrasives) or the blue fish filter foam.
Supplies:
One drinking straw or coffee straw
Scotch Brite Non-scratch Pad or Ehiem Fish Tank Filter
Scissors
Tweezers
Remove the polyfill that came with the cartridge & discard. Cut a drinking straw to about 4 mm below the open end of the cart & notch the bottom. Slide into the cart. If the diameter is too wide to fit in the cart, cut the straw all the way through lengthwise, to remove a section of it. It'll roll back into a tube on it's own. Or use two coffee straws cut to equal length.
Press the end of the empty cart on the greenie to get a template. Cut off the piece. Fill the cart with about 15 drops (on a 510) and plug the end with the filler material using a tweezers. Prod it gently and you should see some of the liquid seep into the pad.
If it floods the atty or leaking, you need to cut a larger piece to seal the end better. If it's not wicking, cut a smaller piece. The only purpose of the straw is to keep the plug from sliding into the reservoir.
You can do a LOT of cart mods with one straw and a pad!
