Short instructions to use the foundry calculation app:
Enter weight: On the main screen, enter the weight of the material in the corresponding text field.

Select unit of measurement: Choose the unit of measurement for weight (ounces, grams or kilograms) using the first drop-down menu.

Select Casting Material: In the second drop-down menu, select the material the mold is made of (for example, wax, sterling silver, 14K gold).

Select metal to melt: In the third menu, choose the melted metal you want to calculate (for example, 18K gold, platinum).

Calculate: Press the "Calculate" button to obtain the result, which will appear at the bottom indicating how many grams of metal you need.