Our Process

The base glass, which is just regular window glass, is cut to size. The design is hand painted on the glass using vitreous glass paint (similar to a ceramic glaze) and the placed in the kiln shown here and fired to approximately 1200 degrees. In the kiln next to the Flame design I’m working on is the glass for a new scarf to be completed and released soon.

Ottolini Process One

After the base glass has been painted and fired it is turned over and a silver nitrate stain is applied to the thin border. Then it goes back into the kiln for another firing.

Ottolini Process Two

Before starting to actually cut the glass, I search through my glass racks selecting the palette I want for this artwork. The patterns are then marked with the colors I want to use. You can see the color notations on the pattern. I have just started to cut glass and have laid the colors on the base glass to see how the colors interact with each other. In the background, top center, you can see the original painting for the Divine Vine series.

Ottolini Process Three

The glass cutting proceeds. The small color sketch to the left is what I’m using to select my glass colors.

Ottolini Process Four

More glass cutting. The glass is cut with a steel wheeled glass cutter like the ones you see in the hardware store. The wheel causes a small fracture in the surface of the glass. Then with my hands or a pair of special pliers the glass is snapped along the score line.

Ottolini Process Five

All the glass is finally cut. There are over 180 very small pieces of glass in this artwork. I have laid everything on the base glass for a final check of the color interactions. I changed out a few colors that I wasn’t happy with and now it’s ready to finish.

Ottolini Process Six

This window utilizes laminating glue instead of the traditional lead or copper foil assembly methods. I used this because it allowed the colors to flow more easily and it eliminated the heavy dark lines associates with the traditional construction methods. Also notice the thin outside border has turned golden yellow as a result of the silver stain application. The gluing was done over a three day period. Letting the epoxy set for a day kept the previously glued sections from moving around.

Ottolini Process Seven

And here is the final piece!

Ottolini Process Six


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