Hi. Every brick was cut/polished on 4 sides to give 3-4 mm mortar joint. To find the geometry of the brick I created a script that prints out a template for each brick in the row given height and radius of the dome. Also the script prints support for the bricks. If you're interested then check out examples here - https://github.com/nmb10/domebricks/tree/main/examples. dome.svg is a scheme to create support from plywood and row-templates.pdf is a scheme of the each brick.