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Looks hazy? Is that what you like to remove? I can't tell by the photo, but oil generally do not haze up, top coats usually do. Is the top left, upper corner the color you are trying to achieve? What happens when you take a damp rag and rub it on the haze, do es it go away? How long has it been like that?
If all your answers are yes, then you need to remove the very top layer of the finish and re-apply top coats. I like an oil based or lacquer base finish to bring back the reddish hue from Redwood. Waterbased finish will make everything milky, whitish similar to what you have now with the exception of it being clear. Tinting water based finish maybe necessary to get that rich amber hue from Redwood. Its very difficult to get oil based finishes in LA county, so that's trick to get the amber hue. That's beautiful vertical grain Redwood you have there.
Forgot about the sanding. It is necessary but not with a belt sander. I really don't think the entire layer of finishing need to be remove, 80 grit with a machine will cut through the finish fast, too fast. Like Dennis said, use 180 grit to remover the very top layer of dirty finish and go from there. I like 3M's Trimite sandpaper. it doesn't clog up when sanding finish. Handing sanding is all it needs.
Last edited by look 171; 04-13-2015 at 10:02 AM..
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