Thread: exrust

just finished cleaning up some rusty old castings with Kano exrust. It is a coal fired water heater that has been kicking around the shop and sheds for twenty years. Now it's painted nicely and good to go as a "kitchen ornament".

I made up about 10 gallons of Kano exrust and water at 4:1 mix.

question: Does this stuff (phosphoric acid, I believe) depleate with use, or just keep going? Should it be saved? or pitched?

Sure cleaned up those castings nicely!

regards

CalG

Originally Posted by CalG

just finished cleaning up some rusty old castings with Kano exrust. It is a coal fired water heater that has been kicking around the shop and sheds for twenty years. Now it's painted nicely and good to go as a "kitchen ornament".

I made up about 10 gallons of Kano exrust and water at 4:1 mix.

question: Does this stuff (phosphoric acid, I believe) depleate with use, or just keep going? Should it be saved? or pitched?

Sure cleaned up those castings nicely!

regards

CalG

It will deplete, but I doubt you are anywhere close to it, so you probably want to save it.

Bill