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| Usually caused by | Cured by |
| Work cycle too long. Investment beginning to set while still under vacuum. | Ensuring the work cycle is not too long and slurry temperature is 20 - 22ºC. |
| Disturbing the flasks too soon. | Leave the flasks for at least one hour. |
| Heating too quickly during de-wax. | Do not exceed 150ºC during de-waxing. |
| Moulds allowed to dry out before burnout. | If not burning out the same day, keep moulds wet by covering with wet sacking or plastic sheets. |
| Casting problems | |
| Wax pattern problems | |
| Mould rubber problems | |
| Mixing guide | |
| De-wax and burnout cycles | |
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