full user guide, support contact and feature requests can be found at http://iethis.com vape builder assists in building coils for use in rebuildable atomizers. it lets you specify a target resistance for the coil, the type of wire and the diameter of the coil to be built, it will then show you the number of wraps required to match as closely as possible the target resistance. the tool provides a single page interface to achieve this and minimizes the need for keyboard input making finding the desired information, quick and intuitive. • shows number of wraps required to meet the target resistance • slide volts from 3.0 to 10.0 • real-time display of amps and watts with the build • warnings levels at 80% and 100% of battery rating • save and load complete build configurations • 207 types