I'm trying to break my chain to add a master link.
I'd hate to buy a chain tool just to add a 75c link, but I can't manage to break the chain. I tried hammering out the pin with a small screwdriver, but I couldn't get it to budge. Then I tried wedging open a pair of outer links with some pliers, but I ended up snapping the pliers.
Is there any way to break a chain without a chain tool (it's okay if the link gets damaged...I'm replacing it)?