Clean your RDA of e-liquid, removing the cotton and old coils.

Select and prepare your new coils.

Insert the new coils into the posts, and gently tighten screws to secure.

Centre the coil with a screwdriver and use wire cutters to trim excess wire.

Use an Ohm reader to check your resistance and make sure there are no shorting problems.

While firing the coils, use ceramic tweezers to gently squeeze them to ensure the coils heat up evenly.

Cut a strip of wicking material a similar size to the coil, then twist into shape.

Insert the cotton through each coil.

Trim any excess cotton evenly, whilst fluffing up for efficient wicking.

Tuck both ends of cotton wick into the wells and add juice until your cotton is nice and saturated.