Additional products, such as our siavlies and the easy-to-use and application-optimized hand sanders, help you create the surface finish you need. We recommend siasoft for fine finishing and sanding between coats of paint on flat or curved surfaces using a hand or random orbital sander. siasoft, a foam backed abrasive, ensures very gentle and even abrading, preventing unwanted sand-throughs and helping you achieve perfect surface quality with minimum surface roughness.