2023/08/24 – Brass Castings & Mold Making Magic Spotted at House4Hack
Hello there, awesome makers! It’s that time of the week again where we chat about our most recent House4Hack meetup. This past Tuesday, our inventive duo – Graham and Password2 – decided to play with some fire… figuratively, of course. The adventurous pair ventured into molding and casting brass, which was nothing short of thrilling. I mean, who doesn’t like a good dose of metal work combined with some keen-eyed chemistry, eh? CO2 from vinegar and baking soda is fed into sample molds The contraption set up by the dynamic duo had a simple but clever base – sodium silicate mixed with fine sand. For the uninitiated, sodium silicate is a funny little compound that, when exposed to substances like CO2, turns hard, forming a solid mold. So, in comes the CO2, generated from a concoction of baking soda and vinegar, and voila, the molds start forming. Simple science? Nah, brilliant genius in action, that’s what it is! First sample mold – the sand is a bit rough for fine details, but good enough for a first cast And let’s not forget the sand! Now in this experiment, we went with a b d