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Sandpaper CAN be used, but it wears down quickly, when new a "1000 grit" piece cuts way too aggressively for 1000 grit and 2' later it gets quite finer and slower' too slow.
If it's the first time...

For serious restoration I'm going as low as the Suehiro 320 (it's actually quite finer though, just for reference) with layers of tape on spine.
Or I might use something in the 800 grit.
With or...