Hard Rock - Whip-Mix Corporation
Its high expansion makes it especially suited for polyvinyl or polyether impression materials. This material has a creamy and thixotropic consistency for good flow under vibration, yet is very stackable. Its extended working time facilitates multiple pours. The stone has a smooth, nonbrittle surface.
- Working time: 6-8 minutes
- Water to powder ratio: 21/100
- 15,000 psi
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