What do you do to keep from over tightening? I saw one guy use a micrometer to measure the regular link and pressed his until it was almost the same width. Is that the proper way?You will want something like this: Chain Breaker & Riveting Tool | Motion Pro
but beware, if you are not familiar with "pressing" on the master link and riveting the pins, please have a professional do it, or train you to do it... too easy to over press the pins if you don't do it right... if you are adventurous (and there are good videos on the subject), I recommend getting extra master links/pins just in case you bust one.
some of the better links come with a spacer to make sure you don't overflare. You can find specs on the head size and that is also a good way to do it... it's miniscule, like 10 mils from initial diameter to proper expansion, so you need a good micrometer.What do you do to keep from over tightening? I saw one guy use a micrometer to measure the regular link and pressed his until it was almost the same width. Is that the proper way?