Sorry I didn't type it that clear,when I said I did it by hand I meant with a soft block.The problem with the tank is the dents were pretty big and I couldn't pull them cause the liner inside,so I had to fill them.Thanks for the advise on feathering the edges out,makes perfect sence.I guess me relying on the primer to fill it was my mistake,thanks again.I've used filler before on the other stuff I fixed dents on,but this is the first time I used glaze.I get it now though,bondo is for rough filling and glaze is for the finishing details.I love the days where I learn something new.Thanks alot man