Answer

Mar 18, 2025 - 01:14 AM
Thank you for your question!
For aggressive reprofiling on super steels like S90V, 15V, and M390, we recommend the Hapstone Start series diamond stones in the following grits:
•80 grit – Extremely aggressive for fast material removal.
•150 grit – Provides a balance of speed and surface finish after the 80 grit.
These stones will significantly speed up the reprofiling process while maintaining durability for hard steels.
Let us know if you need further recommendations!