Wax used in investment casting

Wax used in investment casting forward this error screen to sharedip-10718041152. This is the cheapest and easiest method of preparing a mold for lost wax casting.

All you need is your wax sculptures with sprues, plaster of paris, water and containers. Use two parts plaster powder to one part water. Most plaster packaging instructions say to mix water into plaster. On the contrary introducing plaster powder to water will minimize the amount of bubbles.

So start with water and gradually add plaster. Note- plaster powder shrinks as it soaks, you’ll use a lot more then you think so be supplied with a big bag before you start. You can use a stir stick of some kind but I use my hands to be able to brake up all the lumps fast before the mixture starts to set. Be thorough and add a little more water or plaster until it’s smooth and the consistency of pancake batter. If there are bubbles you can tap the bucket lightly on the work surface and watch them raise to the surface and pop. Gently and slowly insert your wax piece into the plaster mixture.