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WATER SANDPAPER: Types and Numbers or Measures

How to Use Water Sandpaper  ?

Wet sanding is usually done after dry sanding to obtain a uniform finish. Unlike dry sanding, wet sanding does not form a surface, but eliminates the large scratches left by dry sanding.

Consider All These Aspects When You Use Them:

  • When done correctly, the surface will slowly level out, and the remaining scratches will become smaller and smaller, until the light they reflect no longer makes them visible.
  • The wet end of wet sanding refers to the use of water or other liquid as lubrication to help remove sand particles that are removed.
  • Without the liquid, the material can accumulate on the sandpaper and leave scratches that are larger than the particle size, ruining the finish.
  • In general, the best liquid to use on most materials is water with a little detergent. (Dishwashing soap works well).
  • Detergent reduces the surface tension of the water and helps wet the paper and material more thoroughly, reducing scratches.

Types and Numbers of Water Sandpapers

Wet sandpaper varies from 220 to 3000 grains of grit. Wet sandpaper is often black and almost smooth because the sand is very small.

What are Sandpaper Grains ?

Sandpaper grains refer to the size of the abrasive particles adhered to the paper. The higher the grain, the smaller the particles and the finer the scrapes.

The first sandpaper you start wet sanding with depends on the previous grain you used to shape the object and the smoothness of the surface. If you last dry sanded with 600 grit, you will want to choose a wet sanding sand that is around 800-1200.

In general, you will want to start wet sanding about 600-1200 grains. and follow the same dry sanding rules to work through the sandpaper, jumping up to 200-500 grains. You can buy wet sandpaper up to about 3000 grains, but most people will be satisfied with about 1500 or 2000 grains.

A big difference between dry and wet sanding is the movement used. Dry sanding requires small circles; wet sanding uses straight lines, alternating the direction between passes. In this way, each successive pass works to remove the scratches from the previous one.

Water Sandpaper 3M

Use for wet sanding and dry sanding without changing sandpaper The full range of grades is ideal for aggressive or refined self sanding Auto abrasive silicon carbide fractures for longer life.

  • Offers 10% smoother finish than conventional sandpaper.
  • There is no need to waste extra time changing sandpaper between wet and dry sanding.
  • Features silicon carbide abrasives mounted on flexible, waterproof paper.
  • It can be used by hand or for machine sanding.

Fandeli Water Sandpaper

Fandeli water sandpapers are made of very durable waterproof paper. It has a latex backing that is ideal for lacquer, paint and varnish and is super flexible.

Water Sandpaper 1500

1,500 grains are used to sand the transparent layer. They are great for removing clear scratches that cannot be removed by rubbing the compound and polishing.

Water Sandpaper 800

We use this to sand imperfections in the primer before applying the base coat or paint. We start with 600 grains and advance up to 800 grains.

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