Finally, the piece is cleaned up by filing and polishing it. Attach the sprue onto the wax mold using sticky and designer wax. The wax with the sprue attached is weighed so the amount of metal needed acn be determined. The sprue on the mold is attached to the rubber base. The sleeve is attached to the tumbler to prevent spilling.
Dry investment is weighed out and then mixed with water.
It is mixed up very well just like pan cake batter. Then it's put in a vaccum machine to get the bubbles out. This is our friend, Victoria, on the other side of the jewelry bench. My husband was being silly here. The tumbler is taken from the oven and set inside the centrifuge machine, so the hole lines up with the hole in the crucible.