Product Review: Sia Sponge Abrasive Blocks

Chris Green of Chris Green & Son Painters & Decorators, has been trying the siasponge abrasive foam blocks. Testing on a variety of surfaces and contours. How effective are they? Does he think they'll last long? Watch and find out.

What sia Abrasives say about their product:
"ABFoam abrasives
Thanks to their conformability, our foam abrasives are ideal for hard-to-reach areas and profiled surfaces. They can be folded without creasing, thus guaranteeing an even and scratch-free sanded finish.

When sanding with foam abrasives, the focus is not only on removing as much material as possible. It is vital to achieve a smooth and even result when preparing surfaces for subsequent painting or varnishing. If the goal is to achieve a perfect workpiece surface finish with low scratch depth, applying pressure in two dimensions when sanding (such as using conventional sandpaper) is not enough, for example when using paper-backed abrasives.

Instead, pressure needs to be applied in three dimensions. Force can be applied in three dimensions by using the foam as the carrier material in connection with a flexible binder resin. This allows the grit to dissipate the contact pressure along a Z-axis. Advantage: The abrasive grit does not cut into the material as deeply and breaks off less. As such, less material is removed and no sanding through of the material occurs at the edges. Instead, we achieve a homogeneous surface."