Bill Roberts, Ornamental MetalsmithCustom Design Metal Arts by BILL ROBERTS, Ornamental Metalsmith

[ First ] [ Prev ] [ Next ] [ Last ]

First step of the "burn out"....


To begin the "burn out" phase of the process, the flask is put into the kiln. To help in the "wax removal stage" the flask is positioned in the verticle plane with the pour cup down.  As the plaster absorbs the heat the wax begins to melt, and runs out the pour cup.  There is a metal tray under the flask to catch all the melted wax and funnel it out of the kiln. If the tray wasn't there the wax would ignite as the kiln got to the higher temperatures required in the burn out cycle.  The wax removal is done at about 400˚F. And the burn out, which is the process that burns off all the wax residue and preps the flask/investment for the pouring of the molten metal is done at 900˚F.



Flame on.................

Once the bulk of the wax has been removed at the 400˚ temperature the flask is placed in the flat plane. The pivoting handle and a forklift make this a very easy and safe task.  You can see, as the kiln is brought up to the burn out temperature of 900˚ the remaining wax residue is "wicking" into the plaster investment.  This blackish/brown soot that is visible on the outside of the plaster is a visual guide that you can go by to determine when the wax is removed and the flask is ready to pour.

[ First ] [ Prev ] [ Next ] [ Last ]

Home The Artist Media Sculptures Furniture Tables Fireplace Tools & Accessories Lighting
Mirrors Entries Railing Fencing Jewelry Gold Leafing Processes Designs Videos Classes and Workshops
Classes & Workshops Students Work Metalsmithing Links Reciprocal Links Link to Us Credits
GuestBook Commissions Contact the Artist My Ebay Store

Rocío Heredia Studio