Zipline Termination Tips
Some ziplines use large forged through bolts that either have an eye or thimbled eye on the end. Typical sizes for normal backyard ziplines are going to be 5/8 or 3/4 diameter. Make sure to get large corresponding washers. Other ziplines are terminated onto a large strap - this strap should be rated for several times more than the calculated loads because straps will deteriorate under UV and moisture over time. Straps should also be sufficiently large so as not to girdle the tree. Lastly, some zipline installation methods suggest wrapping the cable around the tree. If you're going to do this, the cable must be kept away from the trunk with blocks of wood, a garden hose, or some other surface that won't cut into the tree or restrict future growth like cable will. A garden hose may work for a small zipline but not a medium sized one. If using blocks of wood, avoid nailing them into the tree for the tree's sake.