Wednesday, December 30, 2015

Inclusion

Inclusion is placing glass or other items between glass before firing.  Most of the time, glass is stacked (placed on top of another piece of glass).  Products like Mica powder have to be used between the glass.  Inclusion gives interesting results.  The most notable are the tiny air bubbles created where air is trapped between the glass.  When items are placed between two pieces of glass, a small space is created between the glass.  As the glass warms and begins to fuse together, some of the air from the space is trapped and forms small air bubbles.

I did this piece experimenting with copper mesh, dichroic (metallic looking) glass, stringer, and decals.  I like the shapes, color, and movement of abstract art.

Recently, I tried a piece of copper mesh between float glass (window glass).  I fired it to a contour fire (not quite as hot as a full fire).  I don't really notice any air bubbles in this piece.  What you can't really see above is there are tiny air bubbles inside the mesh of the copper pieces above.

In the piece below, I placed a green grape vine leaf in between two pieces of float glass and fired to a contour.  Most of the leaf burned off and left an ash impression.  There is a small piece in the middle that didn't burn off completely.  When I picked up the glass the small leaf piece slipped.  Had I used a full fire (higher temperature than contour), I believe the entire leaf would have burned off.  I will definitely do this again.  I like the results.