1) Prepare for the pour. Clear out the aisle that runs along the oven and kiln. Place some sandbox sand on the concrete floor, about 1 1/2 ft wide, a couple inches tall, and long enough to easily place all the investments with a bit of room in between. Heat up what you are certain is more than enough metal ahead of time in the furnace.

2) Pull the investments out of the oven. After again checking to make sure that the oven is off, suit up in the silver suits. Removing the castings from the oven is physically demanding. The best way that we currently have to do this is to set up a stool in front of the door and place a fire board on top of it. The top of the fire board should be very close to the height of the base of the inside of the oven. Investments can then be dragged onto the fireboard with a pair of tongs, then carried (by two suited people) to the sand area where they are flipped with the tongs so that the pouring cup points up. This works well from small to medium size castings. Very large castings present a problem.

3) Pour the metal. You can pour just like you would for sand castings. As usual, try to pour quickly so that the metal does not have a chance to cool

4) Allow the castings to cool. Wait at least 6 hours before breaking the castings open. This is more than enough time, but it is much better to wait too long than not long enough.