The TF tank is made with two, almost identical, halves welded together. A sheet metal shop may do it at a cheaper price because of that. A tank builder can make it also, but a good sheet metal man may charge less. If someone made a wooden buck for one half, you would have a business selling Panel and Burb tanks. A good layout person can bend a half out of one piece of aluminum or sheet metal and then weld corners/provide indents. Making a die, too much money for the reward.
Orrrrrr......Hydroform it with a pressure washer!


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn