How to Best Build & Wick Radar RDA with the Geekvape GBOX

Geekvape GBOX and Radar RDA Use Tutorial

The Geekvape GBOX is an industry leading, 200w, dual 18650 squonk mod. This is the latest squonk product by the company and I was lucky enough to get my hands on this for the purpose of this tutorial.

The Geekvape GBOX comes with the dual coil squonk ready RDA known as the “Radar” and today I will be running through how to best build and wick this RDA for use with the Geekvape GBOX.

Coil Building

The Radar is a dual post RDA designed to be used with dual coils. After trying multiple different builds on this, I settled with a good old fashion “fused clapton” coil. The wire dimensions I used are 2 x 0.4mm (26AWG) kanthal cores and 0.13 (36AWG) Ni80 outer wire. For all of my building I use the phenomenal Avid Artisan “Deadalus Coil DIY tool” This tool makes building clapton style wires a breeze, and you can see this in action below.

Once these coils are made, I use my Geekvape 521 master Kit for all of my tools and wrapped a 9 turn fused Clapton coil using the 2.5mm coil jig in the kit. This allows me to get even and perfect wraps, first time.

The Radar RDA has a unique post system that uses grub screws and large post holes, and due to the arrangement of these grub screws, the wire does not get distorted when clamping down. This is a huge plus for me as it keeps the coils neat and the wires flat when using a fused clapton.

Coil Fitting

Geekvape GBOX and Radar RDA Use TutorialGeekvape GBOX and Radar RDA Use Tutorial

Inserting the coils into the hole is incredibly easy due to the large size, and they simply slip in. The deck has two holes either side to allow you to line up the coils perfectly without too much adjustment.

Once the coils are in place, you can tighten down the grub screws to fix them in place and cut off any excess. I always recommend tightening the coils down very close to the deck, and this allows you to put your coil tool back in to the coil and pull it outwards to remove any slack.

Once the slack is removed, you can gently pulse to coils to ensure the coil is heating evenly and from the middle outwards. If the coil is not heating evenly , then try to strum the coil with a pair of ceramic tweezers while firing, or using a small screwdriver while NOT firing. I do not know the science behind why this helps the coils settle, but it works a treat!

Once you have got the coils nice and even, its time to check the top cap does not touch the coils. You can do this by simply putting the top cap on and firing the device gently. If you notice a change in the resistance of the coils then you either have a loose grub screw, or the top cap is touching the coils. This is an easy fix and requires you to go back and readjust the coils and tighten down those grub screws.


Once the resistance is stable, then its time to move on to wicking. In my builds I use one of two wicking materials. Either Kendo Vape Cotton or Cotton Bacon V2. Both work equally as well, but I have recently been using the Kendo more than the Bacon.

Geekvape GBOX and Radar RDA Use TutorialWhen wicking an RDA, it is slightly different than an RTA. However I have noticed while squonking, the wicking is more comparable to an RTA and therefore I tend to keep the cotton a little looser and fluffier than I would do with a standard RDA. You want to cotton to be snug in the coils, but not so tight that the liquid wont flow up it easily. This is something that comes with practice, but here is an image of my finished wicking. As you can see I have left the tails of the wick fairly long as I like these to cover a large portion of the deck when squonking. I have also fluffed these out to ensure the liquid wicks into it well.

Repeat this for the other side and you are almost finished! However there is one more crucial thing to take into account when squonking, and that is the juice hole.


When tucking the legs of the cotton onto the deck, you want to ensure there is a nice gap between the cotton for airflow and make sure the squonk juice hole is not obstructed.

If the cotton is covering this hole then the juice will not flow nicely onto the deck when you push that bottle.

Geekvape GBOX and Radar RDA Use TutorialAs you can see here, the hole has plenty of room to squonk and let the juice flow onto the deck. I find that I have a little more cotton on the deck when squonking than I normally would have on a standard RDA. This is personal preference but I feel it allows me to “over squonk” and avoid there being too much juice in the deck. Normally when building an RDA , I would then take the bottle of liquid and “paint” the coils, however with this I like to fill the squonk bottle and squeeze it in the mod to allow the juice to flow onto the deck. I wait a few minutes to check that my wicking is working and the cotton is become totally saturated without me having to drip. Afterall that is the point of squonking right!

Coil Choice

Having tried multiple builds on the Radar RDA, I find the easiest and most effective build to be a simple fused clapton of Kanthal & Ni80. Alien claptons also work very well, but the time it takes to build them is not worth the return of vape quality in my eyes.

The Radar RDA has just the right amount of airflow and the deck is very simple to work with, so a fused clapton works just as well in this situation as an alien. Round wire coils work well too, but I’d suggest that you use thicker wire as the post holes can be a bit too big for your thinner wires. Complex builds like claptons and aliens are no trouble, but smaller wire can get a little bit fiddly.

Geekvape GBOX & Radar RDA Conclusion

The Geekvape GBOX & Radar RDA have quickly become my day to day mod and I am very impressed with the performance of both. I hope this tutorial helped with your new Geekvape GBOX kit, and if you have any questions then please leave them in the comments section below or get me on my Twitter @mikethevaper.

Mike Strong

I have been vaping for over 5 years and have been a keen hobbyist ever since starting. I moved into the review side of things after the success of my @mikethevaper Twitter page and have been striving to provide help and knowledge ever since.