Understanding Abrasive Cell Structure

What happens here

The video further elaborates on abrasive selection by introducing the concept of open-cell versus closed-cell abrasives. 'Closed-cell abrasives' (like Ekasilk 5mm & 10mm sponges) are presented as ideal for flat surfaces and for achieving an amazing finish, although they are not very moldable. 'Open-cell abrasives' (like the Ekasilk 1/2” Sponge) are shown to be sponge/foam-like, great for contouring and edges, and flexible enough to mold around any surface.

Goal: This step distinguishes between open-cell and closed-cell abrasives, explaining their respective advantages and best uses for achieving different sanding outcomes.