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silver glass 101
Interested in learning more about silver glass? Silver Glass 101 contains lots of information including annealing schedule and free step-by-step tutorials, as well as ebooks available for purchase.

Double Helix Glass Reference

Annealing Silver Glass

basic guide to double helix silver glass
This is the presentation Hayley gave at the ISGB 2016 Gathering on how to work striking, reducing, and combination silver glasses.

double helix test batches
If you love silver glass, you don't want to miss checking out the sample beads made with Double Helix latest test batches.

workshop
Hayley currently teaches five one-day classes: Reducing Intensive, Striking Demystified, Silver Glass Texture, Dragon Scale Beads, and Design Your Own Ornate Bead. Visit the workshop page for detailed description for each class.

schedule
Schedule for our shows, presentations, workshops, conferences, etc.

Silver Glass 101

Majority of the information still lives in our blog. We are in the process of moving everything under our new website. In the meantime, please visit both sites. Thank you for your patience!

Double Helix Glass Reference

Double Helix Glassworks creates 104 coe silver glass – reducing, striking, reducing and striking, as well as two clears, Aether which is reactive with some reducing glass and Zephyr which is not reactive at all.

Double Helix Current Stock Colors
Name Reducing Striking Reducing and Striking Clear
Regular Reducing Super Lusters Speckled Striking Kiln Striking
Aether X
Aion X
Arke X X
Aurae X X
Boreas X X
Chloe X X
Clio X X X X
Ekho X X X X
Elektra 2.1 X
Euros X
Gaia X
Helios X X
Hyperion X X X X
Iaso X X
Iris X X
Kalypso X X X X
Khaos X
Kronos 2 X
Luna 3 X
Melia X X
Notos X X
Nyx X X
Okeanos X X
Olympia Rain X
Ossa X X
Oxalis X
Pandora 2 X
Psyche X X
Terra X X X
Terra 2 X X X
Terranova X
Thallo X X
Triton X X
Zephyr X

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Annealing Temperature for Silver Glass

I have seen a lot of beadmakers complain that the colors on their beads going into the kiln are completely different than the colors coming out. Your kiln environment is the culprit.

Let’s talk about reducing silver glass first - for that’s an easier solution. If the luster colors and iridescence on your beads disappear after annealing, you may choose to do one of the following, or both:
• your kiln has an oxidizing atmosphere, adding a small pea size piece of charcoal will alter the environment enough to eliminate this problem
• lower your annealing temperature – 10F/6C each time until the reducing silver glass retains its iridescence (see below for more information)

As for striking silver glass, if your beads come out dark brown, your beads have been re-struck in the kiln. These may be the reasons:
• Your temperature is re-striking the beads.
• If you have a kiln that has a short interior height (4-5 inches/10cm) and your beads are situated very close to the heating elements especially if they are elevated on a rack. Every time your kiln ramps up to the pre-set temperature, it goes full power which may lead to re-striking your beads.

Lower your annealing temperature 10F/6C each time until a spacer bead made with striking silver glass no longer re-strikes in your kiln. I find that for my kiln, it’s 920F/495C. When Terra first came out, Double Helix recommended annealing Terra at 930F/499C. Just make sure that you soak longer to compensate for the lower temperature (e.g. instead of 30 minutes, soak for an hour).

One last thought - when you garage anneal, every time you open and close your kiln door, the temperature in your kiln spikes up to 25F/14C either direction. To make sure that your kiln does not spike pass your annealing temperature, you may consider lowering your garaging temperature as well. For example, your kiln works best annealing at 930F/499C, then try a garaging temperature of 900F/483C.

Important note: Every kiln is different. First of all, make sure that your kiln controller is registering an accurate temperature by checking the digital controller temperature against a pyrometers (K2 pyrometers is recommended by many lampworkers). At a minimum, check your kiln at room temperature by leaving the kiln door open for about an hour and comparing that to a household thermostat.

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blog topic links

While we work diligently in bringing all the blog content to this new site, here are direct links to the information currently on our blogger pages:

List of our eBooks

Reducing silver glass tutorial

Striking silver glass tutorial