The Dragonsbock is a legendary bottle opener, renowned for its ferocious titanium teeth that render asunder the cap and bottle. Cast in bronze, it carries considerable weight, allowing it to also pierce bottle caps with its spikes.
It was made in Stanford's Product Realization Lab as part of ME203: Design and Manufacturing. In preparation for sand casting, a pattern board was made, combining additive manufacturing and hand sculpting processes.
The head was 3D printed using an SLA process, while the handle was cut and sanded from modulan. The two parts were married on the pattern board, yielding the final template for sand casting.
The raw castings were cleaned with a wire brush to preserve the sand-grain finish. A rasp also helped to deepen the texturing. Finally, holes were milled into which ground titanium "teeth" were inserted.