Investment powder SRS Stone Cast, 22.7kg

Description

The result of years of research and development by SRS, it represents the best quality gypsum powder available today. Stone-cast uses the highest quality specially filtered raw materials, all of which meet SRS QC laboratory specifications. It is ideal for casting 18K and 22K gold.

Features:

• High purity raw materials filtered and selected specifically for jewellery casting.
• Increased fire resistance gives improved thermal shock resistance during burnout and casting.
• Suitable for all metals, especially 18K gold and silver.
• Smoother surface finish – less polishing required.
• Even creamy consistency when mixed and poured.
• Contains all moisturising and anti-bubble ingredients – no need to add before mixing.
• Easy to break after pouring

Product packaging
Bag: 22,5 kg.

Technical data
Powder/water ratio: 100/38-40
Working time 22c Temp: 8 min.
Shut-off time: 22c Temp: 10-12 min.
Thermal expansion: at 750 °C: 1.0%