Long story short...I screwed up my T-molding slot. I set the correct depth of the Slot cutter on my table saw mounted router table, ran a small test piece through and made the required adjustments. Then I ran one of my cabinet sides through. It came out way off. Turns out my router plate was sitting a little low in my mdf table saw extension wing. This problem didn't present itself when I ran just my small test piece through. Maybe I should have routed by hand. Anyways....what can I do to correct the problem. Has anybody been able to fill the bad slot with something and then re-route a new slot. Maybe some type of epoxy or wood putty? I am so mad at myself.
Do you have access to a high-temp hot melt glue gun (and good glue sticks)? Yes, it is a little hacky, but it works.
I did the exact same thing while building a convertible dinette/bed for my home-built, cargo trailer to mini-camper conversion. I don't know how it happened either, other than that it is very difficult to make sure large panels are staying at the correct height position relative to the bit, especially if any part of the panel is hanging off the edge of the router table. So I flipped the panel over, and re-routed, which resulted in a wider slot, filled the gap with hot-melt a foot or so at a time and held the molding in place until cool. It looks fine and has been holding for a couple of years now.
May be quicker and easier than Bondo, but as usual, YMMV

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