|#1 and #2 arch bricks allow accuracy in forming domes and arches|
|Styrofoam forms allow the pre-cutting of bricks to be accurate|
| Numbering bricks make boxing and building with them orderly |
(note: My assistant numbered these, thus the 'IIX' which should be 'VIII' Roman numerals)
Also note that the top course 'jumps' three bricks since individual brick would be too thin.
|Keystone is cut only when dome is built|
|Seven part Keystone is my design.|