The 4000 Grit Diamond Matrix Stone is the polishing stone in the Edge Pro Diamond Matrix lineup - the stone that takes an already-refined edge to a true mirror finish. At 4000 grit the diamond abrasive is fine enough to produce a full mirror with a little time, while still cutting faster than you would expect at this level of refinement. One reviewer who gives it five stars calls it exceptional - noting it produces a perfect mirror and a sharpness he describes as hair-splitting at 28 degrees. That is a wide angle for a mirror-polished edge, which says something about how fine and consistent the surface is coming off this stone. No need for polishing tapes on the Apex system - this stone does the job more durably and with better control over angle geometry.
The 4000 grit Diamond Matrix is also one of the ideal choices for ceramic knife polishing on the Edge Pro - the same diamond abrasive capability that makes the 80 grit diamond the right tool for ceramic knife bevel setting makes this the right tool for ceramic knife finishing. No other stone in the standard Edge Pro aluminum oxide lineup can touch ceramic. The CNC-machined aluminum blank keeps the geometry flat and true across the full sharpening surface, the monocrystalline diamond abrasive maintains a superior and consistent scratch pattern, and unlike a polishing tape, the stone will not tear or misalign mid-session. If you find polishing tapes too delicate for your workflow, this is the solution.
What Customers Are Saying: The one reviewer called these polishing stones exceptional - noting they cut fairly fast for their grit, deliver a very consistent scratch pattern, and produce a perfect mirror finish with time. Hair-splitting sharpness at 28 degrees is the result he reports, which is as strong an endorsement as you can give a polishing stone. He noted this is the kind of product that actually compelled him to leave a review, which says something.
Care Instructions: Rinse after use and store dry. Diamond stones do not dish and do not require flattening. Rinse swarf from the surface during use to maintain cutting efficiency. Keep dry between sessions.
The 4000 grit Diamond Matrix is also one of the ideal choices for ceramic knife polishing on the Edge Pro - the same diamond abrasive capability that makes the 80 grit diamond the right tool for ceramic knife bevel setting makes this the right tool for ceramic knife finishing. No other stone in the standard Edge Pro aluminum oxide lineup can touch ceramic. The CNC-machined aluminum blank keeps the geometry flat and true across the full sharpening surface, the monocrystalline diamond abrasive maintains a superior and consistent scratch pattern, and unlike a polishing tape, the stone will not tear or misalign mid-session. If you find polishing tapes too delicate for your workflow, this is the solution.
What Customers Are Saying: The one reviewer called these polishing stones exceptional - noting they cut fairly fast for their grit, deliver a very consistent scratch pattern, and produce a perfect mirror finish with time. Hair-splitting sharpness at 28 degrees is the result he reports, which is as strong an endorsement as you can give a polishing stone. He noted this is the kind of product that actually compelled him to leave a review, which says something.
- Brand: Edge Pro
- Origin: Made in USA
- Grit: 4000
- Abrasive: Monocrystalline Diamond Matrix
- Backing: CNC Machined Aluminum Blank
- Use: Mirror polish finishing, ceramic knife sharpening, super steel polishing
- Compatibility: Edge Pro Apex and Professional systems
- Mount: Sold mounted to plate
- Item Number: EDMS-4000
Care Instructions: Rinse after use and store dry. Diamond stones do not dish and do not require flattening. Rinse swarf from the surface during use to maintain cutting efficiency. Keep dry between sessions.
Reviews
1 review(s) WRITE A REVIEW (Reviews are subject to approval) Great ProductPosted By: Brandon - verified customer
4 people found this review helpful
I don't usually review products of any kind, but these polish stones are exceptional. They cut fairly fast for their grit, and they're very consistent. The 4000 grit gives you a perfect mirror with a little time, and a retarded sharp edge. Hair splitting, even at 28 degrees.
4 people found this review helpful
I don't usually review products of any kind, but these polish stones are exceptional. They cut fairly fast for their grit, and they're very consistent. The 4000 grit gives you a perfect mirror with a little time, and a retarded sharp edge. Hair splitting, even at 28 degrees.
