I proceeded to add another 1/16" to my dado for the middle shelf of my bookcase. I guess did not have my guide clamped tightly so as I was guiding my router through it gradually make the dado bigger that it was suppose to be. It made a mess. Something like I think 1/8" on side of the slot and 1'16" on the side of the same slot... actually towards the end of the slot it has the proper gap 3/4". I decided to put wood filler in hopes of closing the gap that was opened up by the router. So I want to know, when it comes time to gluing the shelf into the dado willl the glue bond to the wood filler material?