Dream Gifts High Strength Plaster of Paris / Stone Powder may be used for mold-making, sculptured figures, hobby and craft applications. It is preferred by professionals, artists and hobbyists. It sets up very quickly, dries snow white and is non-shrinking. This hobby and craft formula can be painted with any acrylic paint. It can also be used for patching holes in plaster walls and ceilings. Features: Snow White Colour Creamy Consistency Dries Fast Very High Strength Water/Powder Ratio: 60 ml/100 gm Mixing Time: 15 seconds Working Time: 3 minutes Setting Time: 10 minutes Compressive Strength After 1 hr: 150 kg/cm2 After 24 hours:300 kg/cm2 Mixing Instructions: Add 100 gms of Plaster of Paris to 60 ml of Cold Water. Stir using a spoon/spatula to smooth consistency. You will need: Clean Cold Water Clean mixing container Spoon/Spatula Tips for Molding: Make sure mold is clean. Wet inside of mold for easy removal after drying. Fill mold one quarter at a time, tapping on tabletop to release air after each fill. Remove from mold after one hour. Allow 24 hours to dry. Safety precautions: Never mix Plaster of Paris with your bare hands. Always wear hand gloves to mix it. Always wear a face cover on your face. Ensure that you have no contact with face, especially the eyes and nose.