Does anyone know if there is anything I can put on top of some poly to make the surface even shinier/slicker? I'm going to be putting about 6 or 7 coats of poly over some stained birch plywood and I want to get it real smooth. I plan on sanding up to 600 grit (or maybe higher if I feel like it). Can I put some wax or something else on top and smooth it out to 1000 or 1500 grit or should I just stick with the poly?
Any tips would be great!