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Sanding & Polishing Your Resin

Why do you sand resin?

Some times you want to remove a sharp edge on your resin project, or you want to sand your casing into a specific shape. Then you will use the following simple sanding instructions.

Tip: You can sand down sharp edges caused by moulds, but remember you can also pour a thin clear layer of resin on that side of your project to cover the sharp edge. Any dull surfaces can also be glossed over with a thin resin layer instead of spending hours on polishing.

How do you sand and polish resin to a shine?

Sanding and polishing resin is a very time consuming but satisfying process.

You can start off with your roughest grit sandpaper. This will allow you to take off all the access resin quickly, and achieve the shape you want. I like starting with P120 grit paper for this step.

To remove the scratches made by the P120 grit you now need to use a P150 grit paper. You will need to move through each grit in order, from rough to fine, spend enough time on each grit to get the best end product.

The better your sanding technique the better your final polishing will be.

I recommend the following sanding order:

P120, P150, P400, P600, P800, P1000, P1200, P1500 and finally P2000.

Grit P1000, P1500 and P2000 can be sanded with water. Pour water on the sand paper and wet sand your project.

Wipe clean your project. It is now ready to start polishing. I use a simple 2 step polishing. Step 1: Use a microfiber cloth to apply and buff your project with Braso. Step 2: Use a microfiber cloth to apply and buff your project with Silvo.

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