Using templates for the twist of each course and the voussoir template for the angle,

But before watching the video, Why are there Add's on this page? I need to generate revenue, allowing me to reinvest and improve my site, so a BIG hug and thanks in advance.
Each brick is marked, cut and positioned ready to be laid. Each of the 72 cuts are individual in angle and taper. The concrete core must be allowed to cure before the arch centre is removed, but as the arch is self supporting the preferred 28 days for curing can be reduced to 7-14 days.