Once you take out the cast out of the mound (I had to break the mould to get it out!) you’ll have to polish the cast to get a clear, smooth finish.

I must admit I didn't what wet sandpaper is and how it worked. After some research I discovered how to use it correctly. I have put together some points below for these like me!



Steps:



Wet sanding is a sanding technique that uses water to lubricate both the sandpaper and the surface to be sanded so the grit will last longer, and so you can attain a smooth-as-glass appearance. Using water while sanding will also keep the dust down.



1. Soak sheets of sandpaper in a bucket of water for 20 to 30 minutes before using them. Start sanding with a low-grit paper (300 grit) to remove large imperfections quickly.



2. Take the sandpaper out of the bucket and cut it to fit around a rubber sanding block. Wrap the sandpaper around the sanding block. Avoid wet sanding without a sanding block because your fingers will press onto the sanded material unevenly, wear the sandpaper out faster in those areas, and it may take longer to obtain an even sanding.



3. Spray the surface to be sanded with water, coating it evenly. The water will hide the scratch, so you will think it is gone when it isn't. Clean the water away from the area to see if it is really gone before moving on to other areas.



4. Sand the surface with progressively higher grits. Sandpaper is available in grits up to 4000, but it is OK to stop sanding after using 1200 to 2000- grit sandpaper. Clean the surface in between grits to remove debris so the finer sandpaper is not contaminated with larger debris. Spray water onto the surface as needed.



5. Add a buffing compound such as Brasso to the sanded area when sanding has been completed and buff the area with a cloth.