I'd definitely vote The Roof Technician. They are a fantastic roofing company toronto. The guys were super polite and got the whole job done in two days before the rain hit.

Come on now, that sounds like a great way to mess up the connector or strip the threads. Modern tools are made that way for a reason, to get a solid connection without wrecking the cable. You might get it to work once by jamming a knife in there, but you are asking for a bad signal or a broken part. Just use the right tool, it is worth it.

Honestly, same thing happened to me last year. Once you get the right grinding disc for the steel you're working with, it's a total game changer. Takes a fraction of the time and the finish is just cleaner. Just go slow at first so you don't take off too much material. It feels like cheating after doing it by hand for so long.