You didn't say what blades you used. I've read numerous articles saying that you can use regular skip tooth or crown tooth blades, but don't even try. Make sure you use metal cutting blades. They're inexpensive, cut much better, and you can use smaller blades like 2/0 and 3/0. The cutting is much neater and you won't break as many of them. I posted somewhere on this forum how to make a coin cutting jig that works really well. It's essential to have an efficient jig to hold the coins.