Mill Scale Removal Tip

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Hey Folks,Everybody probably has a favorite method of removing mill scale and this may be redundant or some may already be doing it.Here is my method for removing the mill scale when I have large numbers of smaller cut pieces to deal with.- Homeless Depot 5 gallon bucket- Sufficient white vinegar to cover pieces- An inexpensive aquarium air bubblerImmerse the pieces, start the bubbler, and rinse the pieces off with water next day.


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Reply:If you had a way to warm the vinegar it will work even quicker.An aquarium heater is one idea. Some other immersion heater would also work.Just make sure you do it in a well ventilated area away from other tools.Sent from my SM-G996U using TapatalkMillermatic 252 MIGMiller Dynasty 200DX TIGMiller Spectrum 625 PlasmaAltas 12x36 Metal LatheBridgeport Milling Machinewww.psacustomcreations.com
Reply:I use vinegar with small stuff,  but never thought about the bubbler. Thank you Sent from my SM-G960U using TapatalkI haven't built anything I can't throw away.  Perfection is the journey.    Mac
Reply:This method has been written up here probably dozens of times.  You also need to stabilize the fresh steel surface somehow.  First, neutralize the steel with a basic solution, say baking soda.  Follow with a fresh water rinse, quick dry to prevent flash rusting and then coat with paint, some rust preventive, some kind of oil, WD-40, clear spray or paint, etc.  If you use a oil-type surface preservative, painting might not work.  I assume the trick you are posting about is the bubbler...good idea.
Reply:

Originally Posted by psacustomcreations

If you had a way to warm the vinegar it will work even quicker.An aquarium heater is one idea. Some other immersion heater would also work.Just make sure you do it in a well ventilated area away from other tools.Sent from my SM-G996U using Tapatalk
Reply:

Originally Posted by shortfuse

This method has been written up here probably dozens of times.  You also need to stabilize the fresh steel surface somehow.  First, neutralize the steel with a basic solution, say baking soda.  Follow with a fresh water rinse, quick dry to prevent flash rusting and then coat with paint, some rust preventive, some kind of oil, WD-40, clear spray or paint, etc.  If you use a oil-type surface preservative, painting might not work.  I assume the trick you are posting about is the bubbler...good idea.
Reply:What is the benefit exactly of the bubbler ?Tony