evolutions of a dome hub.

In the past couple of years our work has been constantly evolving. With the completion of the first welded version of the hub this past weekend. I thought it a good time show show the many part evolution.

Archimedes hub evolution

Archimedes hub evolution

Top right: Copper,  1/4 scale copper "center rotation" model (February 2013)
Top center: Drinking Straw, "anti rotation" interlacing break-through (March 2013)
Middle left: 3D printed version of cast hub (note square ends) (April 2014)
Middle center: 1.0 production hub, with crushed tubing and fasteners. (June 2013)
Middle right: Welding Jig for 3.0 production hub. (February 2015)
Bottom left: Wax casting of 2.0 hub from investment casting tool. (June 2014)
Bottom center: Cast steel 2.0 hub (July 2014)
Bottom left: Welded steel 3.0 "economy" hub (February 2015)