SRS - Technical Centre: Helpful Hints
1. The casting area and casting equipment should be kept clean and separate crucibles and stirring rods should be used for each metal to prevent contamination.
2. Make sure any scrap being remelted is clean and all investment residue has been removed.
| DIRTY | CLEAN |
|---|---|
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3. Never use 100% scrap metal. It is recommended to use 50% old and 50% new metal.
4. Do not overheat metal. Follow the recommended casting temperatures.
| OVERHEATED SILVER |
|---|
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5. Wait 15 to 20 minutes before quenching cans. Quenching before this could lead to cracking.
6. Alter the speed on the casting machine to avoid the problem of non-fill. If the speed is not sufficient then the metal will freeze before it has a chance to fill all the cavities.
» Download this helpful hint - Casting (PDF 68k)
View other helpful hints online or download (Acrobat Reader PDF) versions by selecting relevant links below:
 | Casting |  |
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Dewax/Firing - Firing Cycles | |
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Investing | |
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Modelmaking | |
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Proportioning Charts | |
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Sprueing | |
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Wax Patterns | |
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