• EZ925™ Sterling Silver Clay - Cool Tools
  • EZ925™ Sterling Silver Clay - Cool Tools
  • EZ925™ Sterling Silver Clay - Cool Tools
  • EZ925™ Sterling Silver Clay - Cool Tools
1 5

EZ925™ Sterling Silver Clay

EZ925™ Sterling Silver Clay

SSC-015

Sold by silver weight (50g = 56.24g of clay; 50g of silver)

Made in USA

$64.95 USD
$64.95 USD
Sale Sold out
Add To Wishlist
See it in the Learning Center!

EZ925™ Sterling Silver Clay

Fire open shelf at 1550°F / 843°C - 1 hour, full ramp. No carbon required.
Shrinkage: 20-25%
Torch firing is not recommended.

EZ925 is a sterling silver alloy clay, made from 92.5% silver and 7.5% copper, delivering the durability of traditional sterling with the creative freedom of metal clay. Unlike other 925 sterling silver clays, it fires on an open kiln shelf in a single firing - no carbon required.

This clay’s smooth, soft texture and extended working time make it perfect for intricate, delicate, or moving designs. Whether rolling, molding, coiling, or joining, EZ925 offers exceptional workability and holds detail beautifully. Once fired, it becomes strong, wear-resistant sterling silver.

Made in the USA. Contains recycled silver.

Click here to view or download the EZ925 Sterling Overview & Firing Guide.


Wet Clay

Ready to use directly from the package, EZ925 is a metal clay that offers the sintered strength of a sterling silver, making it an excellent candidate for making delicate or complex pieces. With a high moisture content and long working time, this clay forms and manipulates without drying or cracking. This clay is soft and smooth, and rolls, forms molds, coils and joins smoothly with ease. For best long term storage and to maintain hydration and workability, store unused EZ925 in a clay hydrator charged with distilled water.

In instances where the clay becomes over-worked or dry, fold distilled water into the clay until correct, re-moistened consistency is achieved.  Adding Rejuvenate to EZ925 will result in a hardening effect on this clay body. Rejuvenate should not be used with this clay.

Greenware and Dry Construction

Greenware EZ925 readily absorbs liquid, you may even notice added water immediately being pulled into the dried clay. For this reason, paste, syringe, or a thick hand made slip is recommended for making connections when combining greenware to greenware or greenware to lump/ wet clay. In its dried, greenware stage, EZ925 is easy to sand and sands very smoothly and quickly. Dried pieces are quite flexible, which is helpful when assembling or manipulating greenware. EZ925 drills easily in its greenware state, and is not prone to cracking or chipping. 

Glycerin can be added to increase flexibility in the greenware phase without adversely affecting the clay. EZ925 is however already moderately flexible in the greenware phase, so adding glycerin is likely not necessary unless you’re planning lots of sharp and drastic greenware bends.

Embedding Objects

Nano Gems, Cubic zirconia, lab created gemstones, bezel cups and other findings or embeddables can be co-fired with EZ925. Please refer to our Gemstone Firing Guide for a comprehensive list of gemstones that are compatible with the firing times and temperatures of EZ925. Most, but not all, CZs and lab created gemstones can be fired at 1550°F / 843°C for 1-2 hours on an open kiln shelf without failure or color change. To ensure color and brilliance, nano gems should not be set in metal clay without an azure. An azure (a setting that includes a hole to allow light to enter from the back side) will ensure nano gems retain their color, luster and brilliance.

Firing

This clay requires a kiln. It cannot be torch fired. EZ925 is an open shelf sterling, meaning that it does not need to be embedded in carbon while firing in order to successfully sinter. After ensuring the clay is bone-dry, there are many kiln firing support options available for firing EZ925. 

EZ925 pieces with a flat back can be fired on a hard ceramic kiln shelf, or a ceramic fiber kiln shelf raised up from the kiln floor (place the firing board of your choice on kiln posts to raise it up off of the kiln floor).

EZ925 pieces that have dimension or need additional support can be fired in alumina hydrate or crushed fine vermiculite in a fused silica dish, or can be placed on supported superwool fiber blanket (place your fused silica dish or kiln shelf under the superwool fiber blanket on kiln posts to raise them up off the kiln floor).

For most pieces, like pendants, earrings, already formed bracelets, and pieces that won’t be bent- Fire at full ramp speed to 1550°F/ 843°C for 1 hour.

If bending post firing, we recommend adding an additional one to two hours hold at 1550°F/ 843°C as not all kilns are accurately calibrated. An additional one or two hours of “soak” time ensures complete sintering. 

If you are creating large pieces 10 cards or thicker, we recommend adding a burnout phase in order to assure all binder is able to burn out before the temperature climbs up to sintering temperature.  To fire thick pieces, especially those that may be bent, place the bone dry greenware on any firing support of your choice (from the list above- no need to place the clay on wire mesh and transfer it) and fire at full ramp to 650°F/ 343°C and hold for 30 minutes. Then full ramp up to 1550°F/ 843°C for 1-2 hours.

Firing in Carbon

Carbon firing of EZ925 is not necessary unless you require carbon for another reason, such as co-firing an oxygen sensitive gemstone. Fire in a kiln safe container such as a stainless steel firing pan with a vented cover. If using carbon, coconut carbon is recommended. 

Phase 1: Full ramp to 650°F/ 343°C and hold for 30 minutes. The greenware can be placed on top of 1" of activated carbon in a steel firing container. Do not add activated carbon on top of the greenware for the phase 1 firing.

Phase 2: Full ramp to 1430°F/ 777°C for 2 hours. Cover all pieces with at least 1" of activated carbon for phase two. Additional work can be added in layers as long as there is 1" of activated carbon above and below each piece. Fire with a slotted lid or lid ajar. Do not cover the firing tin completely.


Shrinkage

If adequate time was taken when refining in the greenware phase, sintered EZ925 polishes to a high shine very easily. Hand polishing methods such as a steel or brass brush can be used for a satin finish. If pieces were burnished or sanded up to microfine in the greenware phase prior to firing, those surfaces can be polished using polishing pads or blocks.  Pieces can also be placed directly from the kiln into a rotary tumbler for 1-2 hours for a high shine. Pieces can also be polished using a flex shaft or other rotary tool with radial bristle disks and silicone polishing wheels and points.

Enameling

Enameling is not recommended on EZ925. EZ925 is a traditional sterling silver alloy, and unlike its enriched sterling and fine silver siblings, enamel does not retain clarity and fire colorfast on sterling silver.

Glass Fusing

Glass fusing is not recommended with sterling silver metal clay alloys, and EZ925 is not recommended for work with fused glass. If you would like to fuse glass with silver, consider using Phoenix Fine Silver clay instead.

Patination

Patina Gel, Liver of Sulphur, or other commercial silver darkening agents can be used on sintered EZ925; If the manufacturer says it can be used on sterling silver, it can be used on sintered EZ925.

Soldering

EZ925 is an excellent candidate for soldering. In testing, even un-burnished fired EZ925 soldered successfully without exhibiting the solder “soak” that can sometimes result when soldering on fired metal clay as a result of the more porous nature of sintered metal. Join sintered EZ925 to other metals and findings by using the same flux, solder, and torches you would use to solder other silver products.

Hallmarking

Hallmark as .925 or Sterling. Click here for our 925 quality stamp.

View full details

See this Product in the Learning Center!

1 3