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Stack Construction

I was inspired by an image that I ran across on Pinterest of a stack construction piece by David Pascoe. I was particularly taken with the use of transparent glass to give an almost drop shadow effect to some of the stacks.

Stack Construction From Top

Little Pyramids

I started with a black circle of glass on the bottom, then created small pyramids of glass that I had pre-assembled with pre-cut pieces of glass and rod. Except at the edges, the stacks are five layers tall, not including the base black circle.

Stack Construction Close Up

Into the Kiln

I assembled the piece on thin fire paper on a 14 inch kiln shelf.

In the Kiln for Fusing


As a result of the full fuse and because I didn’t dam it, the edges of the circle became irregular due to smaller stacks I used near the edge.

Fused Stack

Irregular Edge

This is a better view of the shape of piece after fusing.

Irregular Edge

The Grind

To do that, I scored a circle (with a Bohle Silberschnitt Studio Circle Cutter) that just barely cut off the areas that didn’t have stringer. Then I used a Glastar All Star G8 Grinder to grind off everything up to and including the score mark. It took about two hours to grind, but it came out circular and clean. Then I used 3M Diamond Hand Laps to remove the scratches left by the grinder and bring the finish of the edge up to 400 grit matte that would fire polish.

Clean Edge

Ready to Slump

Because the piece flowed to a larger size than I’d anticipated, I couldn’t slump it on a plate mold. Instead, I slumped it on a Drop Out Ring mold (8631) which was 10.8 inches in outer diameter.

Ready to Slump on Drop Ring

Final Result

I’m super pleased with both the overall look and the drop shadow effect created by clear Tekta in the stacks.

Shallow Plate Edge View


SEGMENT RATE (deg F / hour) TEMPERATURE (F) HOLD (hours:minutes)
1 500 1225 :30
2 AFAP 1500 :30
3 AFAP 950 1:00
4 200 725 OFF


SEGMENT RATE (deg F / hour) TEMPERATURE (F) HOLD (hours:minutes)
1 200 1250 :30
2 AFAP 900 2:00
3 100 700 OFF

* The firing schedules may be designed for other projects that were fired with this one. Everything was fired in a Paragon GL-22AD.