One of the rules of furniture polishing is to use sponge grinding block (sponge sand block), because if you don't use grinding block in furniture polishing, you can't guarantee uniform polishing strength. For the plane, the grinding block should be equipped with a buffer pad; The grinding block without padding has no elasticity, so the sand particles on the sand block will scratch the wood surface when grinding. For curved surfaces, your best choice is a thick foam pad or a sponge coated with sandpaper. These fillers can change shape according to the curvature of wood, thus making the grinding force stable and uniform.

There are three grinding methods: dry grinding, wet grinding and mechanical grinding.

① Dry grinding: use sandpaper to grind. It is suitable for polishing hard and brittle paint, but the disadvantage is that it will produce a lot of dust during operation, which will affect environmental hygiene.

② Wet grinding: Use water sandpaper dipped in water or soapy water for grinding. Water milling can reduce wear marks, improve the smoothness of coatings, and save sandpaper and labor. But pay attention to water milling before spraying the lower paint. First, wait until the water mill layer is completely dry before brushing the lower layer of paint, otherwise the paint layer is easy to whiten. In addition, the substrate with strong water absorption is not suitable for water milling.

③ Mechanical grinding: In large-scale construction, in order to improve work efficiency, mechanical grinding methods can be adopted, such as electric grinding machine (disc type and vibration type).

Sponge sand blocks not only retain the functions of traditional water sandpaper, but also overcome all the shortcomings of water sandpaper, which greatly reduces the labor intensity when polishing products, doubles the polishing efficiency, and also has lower consumption cost and long service life. Because of its water storage function, it can reduce the workload of washing water and discharging chips, and it is comfortable to hold and convenient to use; It can also be used to dry and grind various metals and wood products.

Procurement and wholesale of sponge sand blocks | Shenzhen Yongjia Grinding