I need to rust blue a pair of barrels, and a rig to boil is not in the cards. However, I've found a rust blue solution that is reported to work with steam. I've built a steam chamber system out of PVC, a pot, and hot plate which were all laying around the garage.

The next step is buying a solution. Has anyone tried a product that specifically states that steaming is sufficient, or know of one that you think would work specifically stated or not?

Thanks.