HD 512M is a metal-bond Frankfurt abrasive for rough grinding marble slabs on automatic polishing machines. Its saved grit list ends at 230#, defining an early grinding role rather than a full polishing sequence.
Grits listed for the metal-bond stage
The old parameter field records 60#, 80#, 100#, 120#, 200# and 230# for code HD 512M. Those options should be ordered as a planned sequence around the incoming surface and the next finishing step. The page does not publish a universal number of heads or passes.
Set the trial around a rough marble slab
Identify the marble, slab condition and automatic polishing line. Record the abrasive position, head condition, water delivery and the grit before and after the trial item. The purpose is to remove the agreed roughness while leaving a stable surface for later stages, not to judge this metal-bond tool by final gloss.
Details for an HD 512M order
- Automatic polishing machine and holder compatibility
- Marble type and incoming slab condition
- Required grits from the published 60#–230# list
- Quantity by grit and planned sequence
- Current tool reference and a representative grinding record
Original product images
