Experiment: Making Sodium Silicate Sand Cores
One of the options for producing sand cores (used to create cavities in cast pieces) is to mix the sand with sodium silicate (“water glass”), and then expose it to carbon dioxide gas, which hardens the piece enough to stand up to liquid bronze. No fire in this video, just a short materials experiment.
#bronze #metalcasting #bronzecasting #foundry #metalwork #waterglass #sodiumsilicate #bronzeage #sandcores #casting
Пікірлер: 2
CO2 is heavier than air... maybe it would be better to stand the bag up? The co2 stays on the part, air rises.
@OgmiosForge
2 ай бұрын
Makes sense to me!