It's a sad time, but FYI OSAGE ROOST will be pulling the plug at the end of the month. It's been a great 15 years since the start, but it's hardly ever used now and time to move on!
A hacksaw works good . Put tape on both sides .
Scroll saw for me, I put masking tape on the slate , draw my cut lines on that,and cut through tape and slate together. The tape helps min. the flakeing,and scroll saw allows for different shapes.Brian