Thanks Blooz,

In this case I will sand down to the maple but on other finishes I have put lacquer over poly because I got tired of sanding the darn poly. Like on my LP project I got almost all of the poly off but it seemed like it was so far into the wood that I could not get it all off. That was mahogany though which is more porous. Maple has a tighter grain which might help to keep the poly from sinking into the grain as much.

I was curious on adhesion to poly for other projects as well. I have found it hard to get poly to stick to poly, such as furniture and flooring. It was a general question that I probably should have explained more.

Thanks for the shellac tip Blooz!!