To a lot of people, one of the most intimidating parts of moving over to rebuildable atomizers is the task of making coils. While it’s definitely unlike anything required for easier atomizers, once you learn the basics it’s just a matter of practice! To properly build a coil, you’re going to need several things on hand:
- Resistance wire – Kanthal A-1 is a good choice, and it’s extremely cheap and easy to find.
- Wicking material – Cotton, Rayon, or Ekowool are all options. The choice boils down to personal preference
- Wire cutters
- A screwdriver for the post screws
- A pair of needlenose pliers
- A multimeter – This is CRUCIAL for your safety! Do not use any coil assembly that hasn’t been tested!
- Something to wrap the wire around – A 1/16″ drill bit is perfect
Before getting started, use an online calculator such as this one to find the number of wraps you’re going to need for your target resistance! If you’re unsure what resistance to aim for, try around 1.3 omhs or so. Make sure you’re only using IMR batteries; you don’t want to overload them and risk an explosion! For this example, we’ll be making a coil of 30AWG Kanthal A-1 with a final resistance of 1.5ohms! Once you know the size of coil you’re going to make, follow the following steps:
- Wrap the coil around the drill bit the number of times said in the calculator (7.23 here, so 7 1/2 wraps is close enough)
- Remove the coil from the bit and compress it with the pliers. The goal is to have the wraps touching but not overlapping!
- Reinsert the bit and tighten the coil if necessary
- Mount the leads and tighten the post-screws. It can be helpful to pull the wires tight with the pliers!
- Check the resistance of the overall circuit! The atomizer will have an inherent resistance, and you need to ensure there are no shorts. This is the most important step to ensure your safety!
- Dry-fire the coil on your mod. It should glow evenly, starting in the center of the coil and moving out.
- Insert a small amount of wick.
- If you’re using cotton, align the threads. Cotton expands when wet, so use less than you think you’ll need
- If you’re using Ekowool (silica), you can build the coil around the wick. It’s noncombustible, so you can dry-fire with it on.
- Drip some eliquid on the assembly, rebuild your atomizer, and you’re good to go!
Having a fun time using your new knowledge to explore the world of rebuildable atomizers! Happy vaping!