安全
Dust from plaster and silica sand requires a dust mask
Japanese: 石膏・珪砂の粉塵は防塵マスク
Protect yourself from gypsum and silica dust by wearing a dust mask. Crystalline silica is carcinogenic with long-term exposure. Be careful even during a single work session.
Dust from refractory gypsum and silica sand (crystalline silica) poses a risk of silicosis and lung cancer.
When handling the powder, wear an N95 or higher dust mask, safety goggles, and gloves. Mix with water as much as possible.
When handling gypsum or silica sand, be sure to wear a dust mask (DS2/N95 class or higher).
Crystalline silica poses a risk of silicosis and cancer with long-term inhalation. You shouldn't let your guard down, even during a single work session.
Since you'll be making molds many times, it's a good idea to keep your protective gear close at hand as part of your "usual tools."
This entry is written in Japanese by Rei Chikaoka and translated for readers outside Japan. If something reads oddly, the original is the source of truth.