Crackle Glass Egg
Glass artist Elodie Holmes rolls her glass egg in black powdered glass to highlight the crackle texture.
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Materials and Tools:
air compressor with needle valve application
wooden glass mold
container of water
crushed powdered black glass
glass blowing safety equipment (mask, Kevlar gloves)
1. Pre-heat the glory hole and pipes.
2. Using a pre-heated pipe, take a gather of molten glass, marver and blow.
3. When cooled, take a second gather of molten colored glass (hand made Mystery Opal), shape with a wooden mold (image), blow then re-heat.
4. When the glass is hot enough, submerge it in water for less than 10 seconds.
5. Glass blow to open the crackled texture made from cooling in the water.
6. The glass ball is then rolled into crushed powdered black glass (image) to fill the cracks.
7. The excess powder is wiped off the surface of the glass, and then re-heated until it is completely molten again.
8. The glass is then shaped and blown, reheated, jacked for a neck, shaped and blown two to three times.
9. When the glass is the right size, it is re-heated and swung to point up the form, re-heated and blown again.
10. The egg is heated slightly, hung to stay centered; a small gather of glass is taken on a solid pipe, shaped and cooled.
11. The pipe with the egg is lowered on to the bench rails and the punty is then stuck to the bottom of the egg (image).
12. Water is applied to the jack line, the pipe is tapped and the glass breaks free of the blowpipe.
13. The blowpipe is put into a metal bucket to cool and the egg is re-heated.
14. When soft enough, pliers are then used to pull out the neck to thin it, it is jacked to the proper size, re-heated, jacked again to make the opening about 1/8-inch inside.
15. Water is applied to the jack line and the excess glass is lightly tapped off into a bucket.
16. After the next two re-heats, use a needle valve on the air hose to puff-up the end of the crackle glass egg.
17. There is one final re-heat, and the crackle glass egg is then tapped off into the annealing oven at 900-degrees where it will slowly cool for 12-16 hours.
Crackle Glass Egg project by Elodie Holmes from Santa Fe, N.M.
Katherine Gray designs a wood-grain blown glass "Logger" drinking glass.