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Try loking in the restoration faq for a link, or do a workshop search for 'bristle'.
Several people used the bristle discs, and are pretty happy with them. JoshEarl was one who used them.

You...

Hand sand with a lowergrit than 1500?
Use 600, 800 and 1000 as well.

Or use a cheap homemade belt sander (Still have to upload pics of my 30$ cheapo)
Or use radial bristle discs of the preferred...