[Restrorob]

I had to replace a corner on my cab, The replacement was larger than what I needed. I just drew as straight a lines as possible where I wanted to cut the old rusted part out then used a air cut-off tool. When doing this you want to cut a little at a time and let it cool to prevent panel warping.

I then held the over-sized new corner in place and marked it a little larger then cut it. Using a 4" angle grinder with a soft flapper type grinding disc I went a little at a time till I got a tight even fit on the cab. Then slowly little at a time jumping around so it wouldn't get too hot and warp stitched it in place. Then smoothed the weld out with a fine sanding disc, All I needed is a little glazing putty to fine smooth it.

This may not be a proper way to do it, But it worked for me and you can't tell it was replaced.

The important part is, Don't over heat the panel.