Dremel is cheap, and SO handy. That is what I used!
Almost All The Chain Breakers I Have Used Were Garbage. I Use A Punch, Hammer And A Vise, And Have A Couple Of Beers When I Smash A Finger. Getting The Pins In Sometimes Makes You Want To Break Something, But Remember Your Smarter Than The Chain, So Take Your Time. If Your Doing It Right You'll Have A 12ver Of Miller Lite In Your Fridge And You'll Be Riding Of In The Sunset...