Alternatives to lye for stripping cast iron?

[SaxeJ]

I've been restoring a few old cast iron skillets lately, and while lye seems to be the gold standard for stripping off old seasoning and crud, I'm curious about other options. Not everyone has easy access to lye, and honestly, I'd rather not deal with the safety gear and storage if there are easier ways.
I've heard of people using oven cleaner, vinegar soaks, even electrolysis setups or just burning it off in a self cleaning oven cycle, though that always feels a little harsh.

 

[Milich_Oppenheimer]

Oven cleaner is basically lye in a can, so it works, but you still end up dealing with the same chemical... just sprayed instead of mixed. If you don't want to store lye, it's an easier grab-and-go option. Just bag the skillet in a trash bag, spray, let it sit a day, then rinse and scrub.

 

[sizzleandseason]

Electrolysis is an excellent lye-free choice, it's safe, effective, and can be reused. Oven cleaner is another option you can use, as it has the same active ingredient as lye, but make sure to use it outside. Vinegar works well for tackling rust, but it's not the best for dealing with heavy seasoning

 

[Howard Pippin]

I've been restoring a few old cast iron skillets lately, and while lye seems to be the gold standard for stripping off old seasoning and crud, I'm curious about other options. Not everyone has easy access to lye, and honestly, I'd rather not deal with the safety gear and storage if there are easier ways.
I've heard of people using oven cleaner, vinegar soaks, even electrolysis setups or just burning it off in a self cleaning oven cycle, though that always feels a little harsh.

I have cleaned quite a few cast iron skillets that were pretty bad with build up and I always used fire to do it. You can actually heat them up with a propane torch till their pertinent dull red without seeming to hurt the cast iron and I'll guarantee you that well get rid of any carbon that's on there. But now I just use my barbecue grill which I run on natural gas anyway and put it in just above the burner upside down And then if that doesn't clean the bottom good enough I'll turn it over and do it again and just burn it off. Then of course I'll have to take it to a sink full of suds water and wash the stuff off and re temper it I've never tried lie, I don't know what it would do to cast iron I know we used it in butcher shops to clean grease off the floor and I have used it for making soap. It generally takes an hour to hour and a half in a barbecue grill to clean it.

 

[kennerleyold_99]

I have cleaned quite a few cast iron skillets that were pretty bad with build up and I always used fire to do it. You can actually heat them up with a propane torch till their pertinent dull red without seeming to hurt the cast iron and I'll guarantee you that well get rid of any carbon that's on there. But now I just use my barbecue grill which I run on natural gas anyway and put it in just above the burner upside down And then if that doesn't clean the bottom good enough I'll turn it over and do it again and just burn it off. Then of course I'll have to take it to a sink full of suds water and wash the stuff off and re temper it I've never tried lie, I don't know what it would do to cast iron I know we used it in butcher shops to clean grease off the floor and I have used it for making soap. It generally takes an hour to hour and a half in a barbecue grill to clean it.

I've mostly used oven cleaner and scrubbing, but your fire method sounds intense! Have you ever had a pan warp or crack from the heat? Also curious, does the grill method leave any weird smells or residue after?

 

[Howard Pippin]

I've mostly used oven cleaner and scrubbing, but your fire method sounds intense! Have you ever had a pan warp or crack from the heat? Also curious, does the grill method leave any weird smells or residue after?

Like many, mistakes and experience was my number one teacher in life. I did break a big cast iron round griddle by putting it on a camp stove to just warm it up before I took after it with a propane torch. Not a good plan, It overheated it in the middle and it cracked it in 2. That was my only bad experience, and from then on, what I did use was a big propane burner connected to a 20 pound tank With a hose, you just kept heating it uniformly until it started to smoke and kept after till it all burned off. You just had to have a way of holding it to see that you could do that, and when you got done heating it and cleaning it, I always tried to set them on old cast iron stove burner or something like that that kept them off of a cold concrete floor, then you covered it with a big cardboard box or something equivalent to that and let it sit in there until it was cool enough to handle barehanded. Now the nice thing About using a grill is you could just shut it off when you determine it was long enough probably at least an hour maybe two, and then Left it set for at least 1, 2, 3 hours and then you take it out and take it to the sink and wash it. Sometimes I leave mine set all night and it'll be plum cold when you take it out and it probably would have been cold in an hour I just never experimented quite that quick. Never use water to cool it in anyway shape or form. Actually it will turn all the other stuff in that grill To ashes and it won't have any smell in there at all.

 

[castawaycook]

If you're looking for a safer option, give a vinegar soak a shot. It does a great job of breaking down buildup and is way easier to manage than lye or oven cleaner. While electrolysis, lye, and fire are all effective, vinegar is definitely a friendlier option.

 

[Kos_Mos]

Electrolysis is the cleanest way I've found. It takes some setup with a charger and washing soda, but no fumes, no harsh chemicals, and you don't lose metal like you can with vinegar. Once you try it, you won't go back.

 

[snowden_r]

If you're looking for a safer option, give a vinegar soak a shot. It does a great job of breaking down buildup and is way easier to manage than lye or oven cleaner. While electrolysis, lye, and fire are all effective, vinegar is definitely a friendlier option.

Thanks for the tip! I've mostly stuck to scrubbing and seasoning, but I've got an old skillet from my grandma that's got some stubborn buildup. How long do you usually soak it in vinegar before it starts working? And do you dilute it or go full strength?

 

[Bumpy.Lemon99]

Great points being made all around! @snowden_r the community consensus for vinegar is to use a 50/50 solution with water and only soak for 30 mins at a time. Pull it out, give it a good scrub with steel wool and rinse thoroughly. Repeat if needed, but any longer soaks risk permanently pitting the iron.

That also brings up a question about combining methods. I know aggressive wire wheels are generally a no-go but has anyone had success speeding up the process by following a short vinegar soak with a brass brush or a nylon abrasive wheel on a drill? It seems like that could be a good middle ground between slow scrubbing and risking surface damage.

 

[BigBob75]

Small, round Scotch Brite pads in a drill. You can usually get them at Harbor Freight or a big box store. They don't grind away any metal, just clean it.