Her Tiger Pajama's Chapter 10 Page 8 (Patreon)

We saw it happen

By the way,

Max is making a mold for Bronze casting. He's pouring a mixture of plaster and fine sand around a wax maquette. The mixture sets up super hard and is heat resistant. Once it sets up he bakes it upside down so the wax melts out. Then he pours molten bronze into the cavity.