Offset Posts – What Are They in Vaping Atomizers?

Definition

Offset posts are the non-centred terminal screws or posts inside a rebuildable atomiser (RDA, RTA or RDTA) that sit to one side of the deck instead of the traditional centred position. By shifting the coil-mounting points off-centre, offset posts create extra space on the build deck, making it easier to install larger or more complex coil builds, align wicks and improve overall Juice Flow”>juice flow. This design is especially popular with dual-coil or post-less decks where every millimetre matters, helping Australian vapers achieve cleaner builds, lower Ohm readings and better flavour without shorting against the cap or chimney.

Technical Details

Offset posts are usually milled from 304-grade stainless steel and secured with 2.5 mm hex or Phillips screws rated for 10–15 kg∙cm torque. They sit 1–3 mm off the deck’s vertical centreline, creating a diagonal coil placement that increases the distance between the coil’s outer wrap and the chamber wall to 1.2–1.8 mm—enough to prevent Overheating Protection cut-offs on most modern mods. Variations include single-offset-post “clamp” decks (GeekVape Tsunami 22), dual-offset-post velocity styles (Vandy Vape Pulse V2) and fully post-less decks where the offset is achieved by moving the entire terminal block. Gold-plated positive posts are common to reduce voltage drop below 0.02 V at 30 A.

Usage & Tips

• Trim coil legs to 4.5–5 mm before inserting into offset posts; longer legs can pull the coil too close to the airflow slot and cause spit-back.
• When using Cotton“>Organic Cotton wicks, thin the tail ends lightly so they sit flat in the offset juice wells—this prevents choking and dry hits.
• Always pulse the coils at 15 W and strum out hotspots; offset builds can heat unevenly if one leg makes better contact than the other.
• If resistance jumps, check that the offset post screws are tight—loose screws are the number-one cause of “Check Atomiser” errors on OLED Screen mods.
• Keep the top-cap Open System airflow at 50 % or more; restricted draw concentrates heat on the offset side and may scorch cotton.

History & Context

Offset posts appeared around 2015 when cloud-chasing builders demanded bigger coils in 22 mm RDAs. By moving the positive post 2 mm off-centre, manufacturers like Tobh and Kennedy freed up deck space without enlarging the overall diameter, a layout now standard in many Australian-sold rebuildables.