Find the distance you want to cut, look at that link, and be aware that you should cut the next link ahead of it. Once you get rid of it, there will just be the inner link left.
Just did this process. Why didn’t you show you breaking the chain? That was the worst part. Once I began to twist the crank, the pin popped out of the top part of the link, but proceeded to bend the bottom part of the link. This is because the tool (stupidly) clamps the top part of the link rather than the whole link. I ended up forcing my crank brothers multi-tool with a chain breaker to take the pin out because that tool clamps the whole link and then pushes the pin.
Yes, these chain breakers are very limited when it comes to precision. The best way to break a chain is by slowly rotating the chain breaker and getting the pin out as straight as possible.
The instructions seem say that you don't push the pin all the way through but only push it through the upper plates. Then you have to do the same thing on the 50th pin and the two pins come out together still attached to the bottom plate. Like he said it is difficult to get the tool aligned with the Amazon tool It seems there is something missing in the video. @@AvivMakesRobots