There are five varying levels of finish involved in the process of finishing the acrylic before being bent.
1. At the 180 grit stage, the edges should be roughly rounded. This often results in surface scratches, so it’s best to not get frustrated and attempt to run the sandpaper over the entire pattern.
2. The 240 grit stage should utilise the same process used in the previous grade should be repeated. This should only take half the time as the 180 has done most of the hardwork. It’s now advised to go over any smaller holes, brushing over the holes with your fingers.
3. Again, all holes should be smoothed over again at the 320 grit stage. It’s important to get as many scratches out as possible. Once all the edges have been smoothed out attached some sandpaper to a flat sanding block and go over the acrylic in a circular motion.
4. The next stage requires some 600 grit wet and dry sand paper and a bucket of soapy water. Crumple the sandpaper around the edges of a sanding block and rub the acrylic, making sure the acrylic is continuously damp.
To finish you will require some automotive grade polish and a clean rag. Rinse the bowl and once dry, apply the polsh in a circular motion, buffering the acrylic with the rag. The acrylic should be completely devoid of all scratches and blemishes. Clean throughly under water and it's ready to bend.
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