How about the performance of SLS Polystyrene

SLS Polystyrene (PS)

This foamed white, amorphous or semi-crystalline thermoplastic has medium hardness and low impact resistance. 3D-printed parts made from PS are used to make master models for vacuum, plaster and ceramic shell castings.

Max Build Size:700 x 700 x 500 mm Min Build Size:50 x 50 x 50 mm
Default Layer Height:0.2 mm Optional Layer Heights: 0.2 mm
Tolerance:±0.2% (with a lower limit of ±0.2 mm) Heat Endurance:Up to 100 ℃

Available Colors:White
Available Post Process: none

Suitable For
investment casting

Not Suitable For
Complex designs with intricate details,
Fine-detail models with smooth surfaces

Additional Info
Parts printed with PS are quite fragile, please handle with care, WKproto also provides investment casting service, if you need the final casted parts, you can directly request a casting service to avoid the risk of damage during shipment.