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Articles by Charles Lewton-Brain
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[79] Basic copper and copper alloy fuming
Patination is a technique which has become popular for some kinds of fashion jewellery in recent years. Usually a patina requires the application of a toxic chemical mixture or the conversion of the metal surface to a salt of it's metal. For most patinations then good ventilation and a knowledge of chemistry is necessary. There are however a number of old patination techniques which are based on a simple.... (2002)
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Show me more articles from: [Brain Press Publications]|[Charles Lewton-Brain]
Releated Categories:[Patination]

 

[196] Basic Fire Safety Hints for Jewelers
Have a fire plan; ask your fire department for advice. Keep the appropriate extinguishers around and in good shape. Get ABC all-purpose extinguishers. Get the manufacturers manual and read all the instructions carefully at least three times. Review your fire safety now and then. Make sure you know how to use an extinguisher properly, sweeping back and forth at the base of the fire from 6-10 feet away. Realize that your extinguisher will only work for 15-20 seconds, so have more than one around. Mount them near exits. Dry chemical extinguishers of the stored pressure kind need to be.... (2002)
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Releated Categories:[Workshop Safety]

 

[141] Basic Gypsy (flush mount) Setting
First the stone's diameter is measured at the pavillion and a dent is made in metal for the pilot drill (about 1mm diameter). Then the metal is drilled The metal is drilled again until the hole is about 3/4 the size of the diameter. Lubricate the drill bit. As long as there is a 0.3 mm seat left there enough to set with. It is an easy mistake not to take out enough metal, 3/4 of diameter of the stone is probably a bigger final drill bit than you think. Hold it top of the stone to see how much stone sticks out on each side of the bit.... (2002)
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[44] Basic Hinge making
It is important to pick tubing with an appropriate wall thickness and material strength for the requirements of the piece. Sterling will need thicker material than 14k gold. Nickel white gold is the hardest material goldsmiths generally work with. The hole for the hinge pin must also be appropriate for the material used for the hinge pin.... (1996)
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Show me more articles from: [Hinges and Hinge-Based Catches for Jewelers and Goldsmiths]|[Charles Lewton-Brain]
Releated Categories:[Hinges & Catches]
ISBN: 0969851030

 

[45] Basic Knuckle Options
While this one may seem a little odd at first glance the idea has merit. Linda Chow suggests that a wire inserted through a hole is a type of hinge which by implication makes an normal jump ring inserted into a hole a kind of hinge. There are several instances of wires placed through tubes as a mobile component in goldsmithing. One example is the use of a 'figure 8' safety catch which is often used on box catches. The wire '8' has a small knob ball on the end and snaps over a balled up wire to make the safety device function. It is normally used on the side of a box catch.... (1997)
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Show me more articles from: [Hinges and Hinge-Based Catches for Jewelers and Goldsmiths]|[Charles Lewton-Brain]
Releated Categories:[Hinges & Catches]
ISBN: 0969851030

 

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