Bodymans tape?

I was talking to a guy about sand blasting the body of my duster told him I have to get a quarter panel replaced, he described how he does patching. He uses body man's tape, he cuts the patch a little larger then what he cut out and secures it with a two sided tape then welds them together as a lap joint. I'm not a body guy but this is new to me, may take a lot of filler to smooth out. Has any body done this?