fiddleback makore (how best to apply)

I just got some fiddleback makore (beautiful stuff). I have to flatten it and am loking at the 10% glyserin(sp) mixture and pressing between two sheets of MDF and craft paper.
After that I'm goin toglue it using a cold press and titebond II glue to the MDF substrate.
My question is about sangind before finishing.
How do I make sure I dont ruin the beautiful figuring during the sanding process before finishing?
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