Just got some of these Grinding discs and love them. The best discs for removing Dross and Mill Scale I have ever found !!! $ 31.00 for a Trail 5 Pack of them.. They do not plug up like traditional Hard Discs or Flap Discs they just cut thru everything !!!
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My new tool, an air needle scaler, for dross is this from Home Depot: https://www.homedepot.com/p/Powermate-Pistol-Type-Air-Needle-Scaler-024-0299CT/206339128
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They do work great, but vinegar works even better with far less work. You do have to be able to sacrifice 24 hours of soak time.
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I use this too and it works great. I just use regular kitchen vinegar which is what like 5%. Have you tried the higher strength vinegars they sell at hardware stores for faster times? Been curious about it.
This is expensive @ $87. This thing is terrific. It is made of heavy stainless steel and tool steel. I have had mine for a year or so and am still on the original blade.
Fireball tool website under hand tools.Specialty Tools
Hey, if it works!
I’ve never removed mill scale off anything I cut, bend, and/or weld with the exception of a TIG job.
Yes, I use the 30% and then cut it to 10% for most stuff. Works great. Just had three plates sitting overnight. Came out looking like the shiniest metal you’ve ever seen. Any dross that was still there fell off with a simple wipe. Love it because it takes zero effort from me. I just rinse in water after I take it out of the vinegar bath. No need for baking soda to “stop” the acid.
Thanks for the responses. Gonna move up my game.