I made shatter the very first time I made iso. The second time it wasn't as hard. I think I pulled it off the heat to soon and that's the reason why it was softer. But it is possible. Much more potent stuff the first time. I'm going home to make more now. Anyone know if you can extract the water from the 91% iso.?????? Cause I keeping running into water issues and want to get rid of I it. Once it gets to that stage of the evape, can I re strain the liquid and try to eliminate the water.