Good Tip JRPizza! I will adjust accordingly.
Have cut half way around the back, top cuts.
One thing I noted, because my opening arch is supported by one brick, the arch doesn't make a perfect semi-circle. Instead, there is a taper to the cuts moving from the keystone to the floor. I think this would be easier if it was a half circle without the supporting bricks! But then my opening would be too small. I'm committed now!
Have cut half way around the back, top cuts.
One thing I noted, because my opening arch is supported by one brick, the arch doesn't make a perfect semi-circle. Instead, there is a taper to the cuts moving from the keystone to the floor. I think this would be easier if it was a half circle without the supporting bricks! But then my opening would be too small. I'm committed now!
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