As usual I don't have much time to put together nice looking informative tutorials. But I hope this will get you started in the right direction of how to make a very reliable, smooth, and light weight traveling slider for your iPhone or any small camera for that matter. If you have any questions please feel free to comment. Oh and I filmed this using my iPhone 4S and my Canon T3i.
Before anyone asks you can not cut the sled shorter because if you do and slide the sled to one side then the bearings will fall out. The sled is what holds the bearings in place. And check out my web site www.trinityfxmg.com