So it will look good after gluing?
Sure, as long as you completely fill the gap and sand it flush. That's a very common way of dealing with those slots. Many will take sanding dust and pack it into the slots and then leach CA glue into it. That will typically end up a little darker than the surrounding wood but less visible than open slots. As long as you sand them flush and finish like the rest of the edge of the board, they will not be noticeable. That is, they will not be invisible, but they won't look wrong or out of place.
SR
Okay thanks, thats what I thought. Hopefully I will post some pictures of this project if it turns out good