Collection: Diamond Abrasive Block

Diamond is the hardest of abrasives. A diamond block therefore attacks materials that no aluminium oxide or ceramic can work, and it keeps its geometry much longer.

The reference in the catalogue

The 3M 6200J diamond super abrasive block.

See also our abrasive sponges and our sanding blocks.

Its main use: dressing an abrasive

This is often its primary function. A diamond block passed over a grinding wheel removes the loaded layer and reopens the grains, which restores the wheel's cutting ability. It is also used to true the wheel when it becomes hollow.

A dressed wheel cuts like new: it is a consumable that saves many others.

Its service life

Diamond hardly dulls at all. What wears is the bond that holds it. A block therefore ends by losing its grains, not by becoming smooth.

Working with moderate pressure and, where the material allows, with a lubricant, extends its life noticeably by limiting heat in the bond.