I spent the first part of my jewelry career casting jewelry near the
Eastern Seaboard of the U.S. I spent the middle of my career
casting jewelry in Texas and I have spent the last 16 years casting
jewelry in Colorado.
Each of these places presented different results in the way my
casting came out due to the altitude and air quality. The higher
altitude of Colorado is ideal for casting.
My point is that only experimentation for your area is what is best.
I have never used the steps you are taking and I am inclined to ask
why you are taking this approach.
First I would ask what type of metal are you casting. Is it yellow
gold, white gold, sterling silver or Platinum? Each of these metals
would be handled in a different way with quenching after casting.
As for the steps of heating the tree and quenching in water, as a
general answer I would suggest that you at least wait until the red
color of heat is gone from the button. As for how long to wait again
depends on the metal that you are casting.
As for heating the tree and then placing it in water and sulfuric
acid. I would assume that this is your step to remove fire scale
and not the investment. If so there are safer non acid solutions on
the market. With this step you would actually heat the solution and
not the tree. If you are using this step to remove the balance of
the investment, you may want to try a high pressure water hose and
I am not quite sure why you are then cutting the tree apart and
heating and placing the parts in acid once again.
After Pickling the tree all that should be needed is to rinse the
tree cut it apart and do your pre finish work such as filling and
After the tree is cut apart there are many methods to do the final
finish but for large scale operations a tumbler followed by hand
polish will give good results.