Originally posted by pizza_bob
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That is great advice! I will certainly now use a board on the backside for z-axis alignment! THANKS for the invaluable hint!

John






Then is was arch day today, and boy was it a little frustrating to say the least. I needed a primer on cutting brick tapers and back to geometry for finding an arc with a 20" chord and 4.5" height. Ok so I did get that all done and started cutting bricks with the proper angles and all. I should have cut the bricks a little smaller as the saw tended to push off the brick at the end of the angle. I dry stacked the arch just to see how badly I did and if I needed to start over again. I'll look it over in a day or so and then decide. It has been nothing but gloom and rain on and off here, its down right miserable. But I think it is probably great for the mortar to cure properly! Here are some update pics!
) to the curve and angle cuts and the upside down vee bevel than to the joints lining up! 
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