Drew a flat line with the help of a laser level, then proceeded to cut in half with two small MasterCraft 4″grinders. I say two, because it appears I burnt one out doing this rather large job.
I then needed to clean out any diesel remnants. This tank had rusted open two holes in the bottom and hadn’t been used in 30+ years. After learning from the pro’s, it seemed that intense heat would be the cleansing ticket I needed.
I picked it up this morning after leaving it to burn all night, and it was still smouldering. No rust left on the inside and looks like fresh metal. A good intense pressure wash next and one half is ready for cow water needs and the other for bbq ing.