Building zip lines is dangerous. Some might say that building this website to teach people how to build their own home zip lines would somehow make me liable if somebody gets hurt. I would counter that if I don't build this website, many more will get hurt on zip lines due to very elementary errors in zip line design and/or construction. While some zip line building professionals will no doubt disagree with some of the specific advice I offer here, if they are honest, they will admit that this is at least a step in the right direction to bridge the gap between professionally built zip lines which are too expensive and Joe Homeowner who is going to try it on a shoestring budget without having a clue where to start. Another reason I'm not as concerned about what some professional zip line builders think is that they are very tight lipped about giving advice, but are quick to criticize others who do give building advice. Yes, there are different ways to build zip lines, and some are better than others for certain applications.
All of that being said, don't sue me. If you want professional advice, pay up for it - consulting rates are $1000-3000 per day in the zip line industry. This website is free and therefore, by reading and/or using the information to build your own backyard zip line, you are agreeing to be soley responsible for what you do with the information. If don't understand and agree to these terms, then you are requested not to read any further or use any of the zip line building information.