This tool allows you to pre-hole cartomizers, they can then be used in DCT (dual coil tank) systems.
Once aligned on the cartomizer, screw in to form a hole(s) where required.
An ideal position is about 0.5 ~ 1mm above the bottom of the tank (on the inside), this allows the entire contents of the external tank to be used and wicked inside the cartomizer.
NB: Be careful not to go too deep when creating the hole and create a short or make the hole too large.
IF you make your hole too deep, you may encounter a few issues - as this hole punch pushes in on the carto to pierce it with the hardened sharp tip, it does change its shape slightly and may push and contact on the inner coil assembly - this will create a short circuit condition.
The hole may also be too large for most e-Liquids and will flood or continuously leak, this is why we recommened using a retired cartomizer to practice your technique on first, you will be able to make several attempts on a single "practice" cartomizer and get the hang of making holes similar size to that of the pre-holed versions or to suit your particular requirements.
An advanced tool for advanced users.
Warranty: DOA only