What tool/method should I use to clean up this laminate edge

countertopslaminate

I just built my first laminate countertop yesterday and finished routing all the edges. Almost halfway through routing, my bit broke so I had to borrow a beveled trim router bit. This bit left a mess with the backer from the top sheetenter image description here exposed on the top edge as shown in the picture.
What should I use to clean up this edge, since all the laminate is on the surfaces now? Can I use a certain grit of sandpaper without damaging the laminate? Or is there a file that is fine enough? I am concerned because I will be scraping that residue off of the edge with the new laminate. It has the texture of cardboard, I think it's just the laminate backer.
Thanks for any advice

Best Answer

Personally, I would invest in a new laminate routing bit and go over that edge. You could also a chisel and lightly score the edges. I'd put some masking tape on the laminate to protect it while your finishing the edges. A fine grit sandpaper would also work.