Multiple abrasive assembly and method

A method of assembling an abrasive assembly comprising:

• providing a nonwoven pad having a major generally planar face, the face having abrasive characteristics and defining an abrasive engaging surface;
• providing an abrasive sheet being smaller than the planar face of the nonwoven pad and having front and back major surfaces, the front surface of the sheet having abrasive characteristics differing from those of the face of the nonwoven pad, and the back surface of the sheet having a plurality of engagement stems projecting therefrom;
• and
• pressing the engagement stems on the back surface of the sheet against the engaging surface on the planar face of the nonwoven pad to releasably secure the sheet to the nonwoven pad.

A method of surface treatment for a generally planar workpiece surface, the method comprising:

• providing a nonwoven pad having a major generally planar face, the face having first abrasive characteristics and defining an abrasive engaging surface;
• providing an abrasive sheet being smaller than the planar face of the nonwoven pad and having front and back major surfaces, and the front surface having second abrasive characteristics differing from those of the face of the nonwoven pad, and the back surface having a plurality of engagement stems projecting therefrom;
• aligning the sheet generally symmetrically across the face of the nonwoven pad;
• pressing the engagement stems on the back surface of the sheet against the engaging surface on the planar face of the nonwoven pad to releasably secure the sheet to the nonwoven pad;
• placing the face of the nonwoven pad and front surface of the sheet adhered thereto against the workpiece surface;
• and
• moving the nonwoven pad to sequentially present the second abrasive characteristics of the front surface of the abrasive sheet and the first abrasive characteristics of those portions of the nonwoven pad not covered by the sheet to the workpiece surface.

A method of surface treatment for a workpiece, the method comprising:

• providing a nonwoven pad having front and back generally planar major faces, each face having first abrasive characteristics and defining an abrasive pad engaging surface, the nonwoven pad having a slit therethrough;
• providing an abrasive sheet being smaller than the faces of the nonwoven pad and having front and back major surfaces, the front surface having second abrasive characteristics differing from those of the nonwoven pad;
• inserting a first portion of the sheet into the slit in the nonwoven pad whereby a second portion of the sheet extends out of the slit on the front face of the nonwoven pad and a third portion of the sheet extends out of the slit on the back face of the nonwoven pad;
• urging the back surface of the second portion of the sheet against the front face of the nonwoven pad and urging the third portion of sheet against the back face of the nonwoven pad;
• placing the front face of the nonwoven pad and the front surface of the second portion of the sheet against the workpiece;
• and
• moving the nonwoven pad to sequentially present the second abrasive characteristics of the front surface of the second portion of the abrasive sheet and the first abrasive characteristics of those portions of the front face of the nonwoven pad not covered by the second portion of the sheet to the workpiece.