We just came across this great video by Madvapes on keeping your mechanical mods & rebuildables safe. We can't stress the importance of educataion enough when dealing with a mechanical mod. We have also included a link to an iphone ohms calculator to help you with your builds. Stay save and vape responsibly. Download the Iphone App: iVape by David Castro https://itunes.apple.com/ca/app/ivape/id682229263?mt=8