Well, I have about .75 of the old panel out. Need to work on that corner a little more to get the middle of the sandwich out. I cleaned up all around it and then started using a slitting wheel. Slow, but no undue stress to the area. This car came wet area and has under coating. I am using a putty knife for the heavy stuff, but are there any chemicals that clean that stuff from the metal? Never worked with under coatings. I will need to replace it when I am done so any idea where to get that stuff?
Thanks for all the help and letting me bend your ear.