I have never broke one yet (did hundreds) them omana's are hard fuckers. 100% just make sure you do a quick hard snap. Stick the head of amp so the neck is covered at dot or line. Have confidence and do it fast and hard and they won't break (I hope)
I would score them with a shitty old knife, just to get them started, and then I would break them off in a towl. I've had some imperfect breaks, but I've never lost any juice.
I used to score amps dulled all my fuckin knives. I never score anymore, lol that sounds bad "I never score anymore" sounds kind of like a country song.
I use a file to score the amp (one made of metal, you can buy it at a hardware store) and make a score in the amp big enough to catch my fingernail on, then i grab the bottom part of the amp and hold it straight up and down, and put a towel over the top part and push the top part away from where the score is... Clean break every time
I would score them with a shitty old knife, just to get them started, and then I would break them off in a towl. I've had some imperfect breaks, but I've never lost any juice.