My build of Jordi Vallés' domino setter. On a smooth service it runs very well with only a micro geared motor powering it. I couldn't find dominoes that were as thick as those used in the original model, so a few modifications were made. The coupler came out, the end angle girder was flipped and moved closer to the tile pusher rod, and a bolt was added in the bottom of the tile pusher channel to keep the pusher rod higher on the tile when pushing.

The motor used was a 298:1 version. A 150:1 version would have been more "up to speed", and I may try it when/if I get my hands on one. The downside to the faster speed is less than half the torque. That may, or may not, be a problem. One day!