|Possible Fault Cause||Solution|
|Overheated flasks during burnout||Follow recommended burnout cycle.|
Ensure furnace ramp does NOT exceed 250°C/Hr.
Ensure 1st stage burnout temperature is kept in the range 220°C - 250°C and is held for 4.5 hours minimum. If problem still occurs, increase hold time.
|Dust on waxes or trees||Ensure once waxes or wax trees are made, they are stored in a dry, clean and dust-free atmosphere. Do NOT store waxes or trees in a dusty environment or investing room.|
|Metal temperature incorrect||Reduce or increase metal temperature (see burnout section).|
|Rough waxes||Ensure excessive talc or release agent is not used, as this will produce rough waxes and therefore rough castings.|
|Flask burns out too quickly||Do NOT burn out before minimum of 90 minutes after investment.|
|Under or over-worked||Follow the recommended mixing instructions (see product pages).|
|Steam de-waxed for too long||Steam de-wax for a maximum of 60 minutes at atmospheric pressure. If steam de-waxed for longer than 90 minutes, the steam will start to erode the surface of the mould. Do NOT steam de-wax in a sealed container.|