Twisting & Bending Terra Cotta For The Alberta Dome Project

The CNC router is being put to use to produce models that twist and bend in all 3 axes. In this case the blocks are for a window surround in the lantern of the Alberta Legislative Dome. These blocks are ideal for our machine’s 5 axis capabilities as are able to match the surfaces perfectly through the use of continuous 5 axis milling. The cutting tool remains normal (perpendicular) to the surface geometry over its entire face. As the surface twists and bends, the cutting tool follows it exactly creating a superbly accurate model.


Time lapse photos of the block starting to be roughed out, wherein the bulk of the excess material is removed before the final pass during which the model is cleaned up.

Some of the models that have been completed on the router.

Units assembled into the arch