Hard Rock Die Stone - Whip-Mix Corporation
Hard Rock is a high-strength, high-expansion die stone 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 and a smooth, nonbrittle surface so dies trim easily without chipping.
- Working time: 6-8 minutes
- Water to powder ratio: 21:100
- 15,000 psi