Remember Prometheus bronze clay shrinks about 6-10%, so make sure the jewellery piece youre working on has been measured to account for the shrinkage that takes place during firing. 3. Fire it for 15 minutes, take it on to a fireproof surface and let it cool down. Before firing your works, test your kiln's accuracy by firing a small piece of clay. 9. or Distilled Water to a form a crumbly clay then mix crumbly clay until all the water is absorbed. 2. It can be hammered and forged; it can be textured; if it's fine silver, it can be fused to other fine silver; and it can be soldered! Bronze clay reacts with oxygen in the air to create oxides that interfere with the sintering process. 10. Bronze metal clay: Firing Schedule: 1525F (830C) for 2 hours (after a fast ramp to temperature) Composition: 10% tin, 90% copper, water & binding materials: Brand: FASTfire Bronz Clay: Shrinkage: 5-10 % approx. Keeping Bronze Clay Moist While You Are Working As soon as bronze clay is exposed to the air, the moisture in the clay begins to evaporates and the clay starts to dry out, which can cause cracking or premature hardening. Fire following the new low-firing schedule. The original BRONZclay formula (and most other bronze clay formulas): Must be fired in activated carbon. Everything went well up to the firing. BronzClay cannot be torch fired. 3. Product tags. I was having problems with under firing and over firing, so I needed to tweak my firing schedule. Buried in coal carbon in stainless steel firing pan (carbon purchased from WLW and never used before) Ramped at 250 per hour to 1516, held for 3.5 hours. Metal Clay (74), bronze clay (10), Bronz Clay (7) Related products. Use a slotted spoon to sift pieces out of the carbon. I found this article by Mardel Rein to be invaluable. Here are five different common bronze clay firing problems you should be aware of: Think about shrinkage. So.I knew this would happen. BRONZclay brand clay is fired within a narrow range of temperatures. I discovered something very interesting yesterday which I think is pretty important for anyone working with bronze clay. Going too far below or over the correct temperature can result in a firing failure. They all came out looking very dull, with a deep matte dark or black patina. Monday, 17 November 2008. Continue to heat the clay until the binder burns away, leaving you with a piece of bronze metal that is glowing red. Your metal clay will flame for a few seconds as the binder in the clay burns off. Metal is metal, after all. Fire at the temperature of the lowest fire clay / 2 hours CARBON FIRING METHOD Two Step Method COPPER CLAY Step 1 On steel mesh / In pre-heated kiln 1100F / 593C 10 minutes When it finally By jen March 3, 2010 October 7, 2016 bronze clay, firing problems. As long as the charcoal used in firing bronze clay is held in a container such as stainless steel that includes a good lid, your kiln should be okay. BRONZE & SUNNY BRONZE CLAY 1508F/ 820C 30 minutes www.clayrevolution.com COMBINING METALS All Prometheus clays can be combined and fired together in one firing. Buried in coal carbon in stainless steel firing pan (carbon purchased from WLW and never used before) Ramped at 250 per hour to 1516, held for 3.5 hours. Allow the kiln to cool to 1000F, then remove the kiln lid completely and finish cooling the pan in the firing chamber. What was done exactly to potentially cause a success (we hope!) Hopefully, this will help those of you struggling with firing problems, and will also serve as a reference for myself. I fired it in the coal medium, wanting the patina, as advertised. Finishing Prometheus Bronze Clay Brush your piece with a metal brush and, if necessary, put it in hot pickling solution. (*) After pickling, rinse the piece thoroughly with water and dry. This will give you a nice warm reddish bronze color. Once the kiln has been crash-cooled, and the firing container lid removed, You can cool BRONZclay pieces rapidly by quenching in water if there are no stones embedded. Firing Prometheus White Bronze Clay. Let rest for at least 30 mins to allow the clay to settle A reduced atmosphere is created by burning materials in the kiln that uses up oxygen. So I soldered the ring design portion onto its new band. Roll a layer of White Bronze, 1 card thick. Clay was totally dry as it had been in greenware stage for over 24 hours. In a bisqueware crucible* I put of coconut activated charcoal** and then laid my raw bronze clay pieces on top. What came out of the firing pan was basically a pile of bronze dust. Fire for 5 minutes. Soon the piece will begin to glow. Found it easier to work with, consistency-wise, than instructions had warned. Electric kilns may show slight deviations, due to their temperature control systems and isolations. Turn the hob back on. Electric kilns may show slight deviations, due to their temperature control systems and isolations. 11. It can be molded, textured, even turned on a potter's wheel. Prometheus Bronze Clay can be fired with most lab-created gemstones (cubic zirconias), pre-tested natural stones, glass beads, ceramic porcelain and Prometheus Metal Clays. When PBC is fired in a kiln, the organic binder evaporates, burns away and youre left with pure, solid bronze. Phase Two of the Firing: Because the recommendation mentions during Phase 2 that the crucible should be covered (although they also recommend using a stainless steel crucible) I used a kiln shelf to cover the crucible during Phase Two. So.I knew this would happen. Turn the hob off. General instructions on firing homemade metal clay. (you can see an image of this in my introductory blog Dust, Rust and Pine) Then I placed the crucible on top of three stacks of two kiln posts. A couple of weeks ago, I posted that I was having trouble firing bronze clay. The last few batches did not fire/sinter correctly. What came out of the firing pan was basically a pile of bronze dust. Proceed with caution when drying. There is a fine line between Clay being right and too wet. Place the dried piece (or pieces) on a stainless steel mesh and put it into the pre-heated kiln at 500C/932F, or on a kitchen stove. Clay was totally dry as it had been in greenware stage for over 24 hours. To clean off the oxidation you can either use a radial bristle brush or drop it (after quenching it in water) in a pickle solution. Hi I made some small test pieces of copper clay (Creative brand) and fired them according to the manufacturers instructions (covered with kiln blanket and fired at 920C for 30 mins, then put in picklean for 10 mins) and they came out beautifully. It must be fired in a kiln, inside a stainless steel box, buried in carbon. Bronze Clay and Copper Clays. 4. Over the next few weeks, Im going to try to run regular blog posts about my metal clay experiments. While firing, individuals with lung or respiratory problems may be affected by the smoke created. Make your piece as if the White Bronze were the backing layer. The last few batches did not fire/sinter correctly. Cover bronze clay items with a layer of coconut charcoal about thick. If the clay becomes too wet let it sit uncovered until the evaporation of water allows it to be the right consistency. Wear gloves and safety glasses, use tongs, paddles when loading and unloading a kiln. This is a 2-step-method. Detailing as much as I can about the whole process. So.I knew this would happen. Fire in a well-ventilated place or under a kitchen extractor fan. Lay it on the copper piece. It is a lot easier to do this step now - before you have fired the clay. Dry. The Prometheus MiniKiln PRO-1 is a brilliant little kiln, suitable for both personal and professional Then I moved up to a Paragon Max 119 kiln so I could fire cone 6 pottery as well as glass and metal clay. More info. Immediately place your design on the hottest part of the firing mesh using a pair of tweezers. Need some advice about Bronze Metal Clay I recently decided to give the new bronze metal clay a try. Video tutorial of conventional kiln firing for Prometheus Bronze Clay. Please keep in mind that these instructions are for the Original BRONZclay formula. I also started trying to make hollow forms in the bronze clay. And after it's fired, metal clay is metal, too. What came out of the firing pan was basically a pile of bronze dust. The photos below show how to tell if you need to raise or lower your target temperature to correct the problem. The last few batches did not fire/sinter correctly. 3. Sintering the Bronze Metal Clay Sintering happens during the firing process. 2. Firing Prometheus Bronze Clay Before firing your works, test your kilns accuracy by firing a small piece of clay. can be found: FeltMagnet BRONZclay Bronze Metal Clay Jewelry Techniques A comprehensive guide to working with Metal Adventures' original Firing Prometheus Bronze Clay. or failures. Place the protective cover over the metal clay. Phase One of firing A couple of weeks ago, I posted that I was having trouble firing bronze clay. By jen March 3, 2010 October 7, 2016 bronze clay, firing problems 6. A couple of weeks ago, I posted that I was having trouble firing bronze clay. The pieces were completely bone dry. But when I then fired some pendant shapes they turned black as soon as they were out of the kiln and were brittle and all One big note on these clays: That black stuff that often appears on these clays after firing is nothing more than oxidation: a chemical process that occurs when base metal clays are exposed to oxygen. STEP 1. To minimize the clay's exposure to oxygen during firing, the unfired clay is buried in activated carbon granules during the firing process. Programmed my digital kiln for the right ramp time, holding time, etc. Now start a timer. Prometheus bronze clay has a minimum firing time of 7 minutes, during which the sintering process takes place. I had some problems with the second firing I did in the class. Firing large pieces, like sculptures, is best done in a furnace with a smoke extractor. According to your test result, you may change the firing temperature by 5% (up or down) until you reach to the correct sintering. Firing an electric kiln in a reduced atmosphere shortens the life of the elements. As soon as bronze clay is exposed to the air, the moisture in the clay begins to evaporates and the clay starts to dry out, which can cause cracking or premature hardening. So, as with any metal clay, it's important to actively keep the moisture inside the clay. Despite its challenges and idiosyncrasies, more and more metal clay artists are working with bronze clay because of its affordable cost and advantageous qualities. Cut away the excess clay from around the inner frame. Thoughts and ideas about metal clay. So, as with any metal clay, it's important to actively keep the moisture inside the clay. BronzClay firing problems. Before the firing. By jen March 3, 2010 October 7, 2016 bronze clay, firing problems 6. Please see the previous two videos to see how we got to this point.

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