I had imagined that I would be preparing my matt black lacquer background with a 600-grit sandpaper, so I wanted to know which grade of pumice stone would be similar to this so I can have some uniformity between the black background and the (red and gold) painted designs. This rules out the use of sandpaper once the hand painting of the design has commenced (I imagine it won't be able to match the contours of the lacquer design). To give some more detail about the style and process I am hoping to imitate : some designs are deliberately built up to be somewhat 3-dimensional and are often polished and re-polished as the image is built up (as part of the process of creating and shading the image, not applying a finish to it). That said, I was somewhat confused about my plan so thank you for your answer as it made me clarify my thinking process a great deal. It is also used to do sanding of the wood with the sandpaper grain. Sandpaper grade of 60 to 120 is used to remove leftover paint stripper. 46-120 grade sandpaper is used to clean the surface of sandstone, brick and solid wood. Patterns are hand painted on a matt background and then a clear coat is added, which is the one that gets the polishing. Sandpaper of grade that falls between 24 and 60 is used to trim the surface of old paint and metal. The higher the grit number, the finer the abrasive particles and the smoother the finish that can be achieved. The grit is a rating of the size of the abrasive particles embedded in the sandpaper. In response to your question, ED65, all my research on the subject of Japanese lacquer designs has pointed me in the same direction that you have indicated. There are 6 main sandpaper grits, categorised by coarse, medium, fine and extra fine. For most DIY sanding projects you will need 60-240 grit sandpaper. Grits below 40 only need to be used on wood that has a lot of paint or varnish to be removed. Extra fine grits like 400 are used to get a really fine finish on wood for waxing and polishing. Hi everyone, some really great replies again. Girts above 240 can be used between coats of paint to help get a super smooth finish.
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