Double-disk grinding is another form of flat surface grinding. The double-disk process grinds both sides at the same time for economical high volume production.

Double-disk grinding works well with all steel alloys, but unlike blanchard grinding or conventional surface grinding, double-disk does not employ a magnetic chuck so non-ferrous materials like aluminum, copper alloys, and stainless steel can be ground.

Double-disk grinding produces good flatness, parallel, and micro finish.

Lapping is employed when very high finishes are required. Materials of all kinds, including ferrous and non-ferrous, can be lapped.