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Excerpts from: MJSA Journal
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[792] Fabricating a Platinum Sphere Pendant with a Laser
It is becoming common practice to do more and more platinum fabrication with a laser welder. For this project, you need about a foot of 0.25 mm hard platinum wire. You can purchase hard wire from a metal supplier, or draw it down from a larger size without annealing to achieve the hardness required. You also need a wooden bead (the diameter of which is up to you), superglue, and a laser welder.... (2006)
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Show me more articles from: [MJSA Journal]|[Jurgen J. Maerz]
Releated Categories:[Platinum Fabrication]|[Fusing & Welding]


[604] Finding and making your own wax carving tools
Casting is the most important method of commercial jewelry production. Even for small workshops, lost-wax casting is often the fastest method for creating a jewelry piece, especially if there is any complexity to it. However, one of the things that jewelers forget when carving wax models for lost-wax casting is just how different wax is from metal. They often use techniques and tools designed for working with metal for carving wax, even when it does not make sense to do so. By approaching wax as wax, not metal, jewelers can come up with new and faster ways of creating wax models for casting.... (2005)
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Show me more articles from: [MJSA Journal]|[Charles Lewton-Brain]
Releated Categories:[Wax Carving]|[Small Tools]


[201] Finding Flaws - Identifying and preventing wax defects
Manufacturer spend much time and money diagnosing defects that are believed to originate in the casting process, but actually occur during waxing. Many companies run in circles, changing this gate/sprue, that metal, these temperatures, and screaming at suppliers to try to fix the 'mystery' problem. While these areas certainly can be the source of problems, many defects are misdiagnosed as casting defects, and thousands, perhaps millions, of dollars are wasted in search of non-existent flaws in the casting process.... (2003)
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Show me more articles from: [MJSA Journal]|[J. Tyler Teague]
Releated Categories:[Casting Troubleshooting]|[Wax Working]|[Jewelry Mass Production]


[234] Fitting the Mold - Comparing natural rubber and silicone
Natural rubber or silicone rubber? In the world of lost wax casting, this question is hardly an academic one. The mold material chosen must be up to the task of turning a single original model into hundreds or even thousands of wax models for casting, and choosing the wrong material can lead to some serious hair-pulling in the casting department. There are actually three primary categories of rubber mold making materials.... (2003)
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Show me more articles from: [MJSA Journal]|[Suzanne Wade]
Releated Categories:[Jewelry Mass Production]|[Mold Making]


[235] Five Steps for Successful Investing
A good practice for preventing investment blowout is to measure the height of the trees before investing. The maximum tree height should be between 0.5 inch and (for larger trees with more metal) 0.75 inch shorter than the fill level of the flask. It's also important to leave a 0.125 inch gap between the top of the investment and the top of the flask if you are using benchtop vacuum casting with a solid flask.... (2003)
Complete Story

Show me more articles from: [MJSA Journal]|[Gregg Todd and Greg Gilman]
Releated Categories:[Lost Wax Casting]|[Casting Troubleshooting]


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