Hi Everyone,

I am doing a refurb of a beautiful old Union box from 1937. 

So far so good. But I do have a question regarding wet sanding using a three part finish (BLO, mineral spirits, oil polyurethane). 

I have put some veneer on the top and when I do a light dry sand the dust is filling in the border which I think works well to soften the transition (hide my mistakes).

My question is can I wet sand/sand slurry my usual three part finish to fill in the border holes? I know wet sanding is usually ok with an oil finish but would it be ok with the poly?

I would be apply the finish, wait a bit of time then wet sand with 220 or 400.

What does everyone suggest?

Thanks!