I resurfaced an older Lodge pan and it came out fantastically smooth but I made one big mistake in the process....I used a brass wire brush when stripping off the old seasoning. I did this on the advice of an expert online who is referenced all over the internet as having the best way to handle this job. Well the wire brush worked as reported however no one mentioned that the brass bits would (upon heating of the pan later) melt into the pores of the cast iron turning the pan copper red! After flipping out, then crying, and then flipping out again, I did another Google search to right away find a guy saying to NEVER EVER use a brass brush on a cast iron pan or this problem will occur.
Now I have the smoothest slickest dark copper looking cast iron pan you've ever seen.
Only down side of this whole experiment for me is losing the natural seasoning the pan built up over the last 10 years. Not a big deal really as its easy to add a functional season back to the pan in the oven. Good to see I'm not the only one who has done this.
I take off the seasoning when it's uneven - especially when it's raised in the center and the edge of the pan almost has a channel around it. I've filled it with kosher salt and put it on high heat. I've also just thrown it on a super hot grill to burn off the seasoning.
Whatever way you take off the seasoning, I've found that after a few weeks, you can have the pan well seasoned. I've just cooked burgers, bacon, or used an oil, like canola oil, that easily polymerizes to start the seasoning. My pan seems no worse for wear.
But, according to many people, current Lodge cast iron pans have a much more rough surface than older pans, e.g. Wagner, so sanding down the surface may also improve your performance. If you do go forward with sanding it down, I would sure like to hear the results.
Griswold is the real deal. I got my No.9 back in '71 for a dollar at the Goodwill store, as I recall.
"The Buddha resides as comfortably in the circuits of a digital computer or the gears of a cycle transmission as he does at the top of a mountain."
I've got some Lodge pans that don't see much use since I'm stuck with a glass top electric cooktop and don't want to scratch it all to hell. Would it hurt anything to grind the ridge off of the bottom of these pans and just make them flat and smooth?
i use a brass bristled brush on my cast iron (i have a pretty extensive collection that i use all the time) pretty regularly, and i've never had an issue with it.
i used to keep it on the french top stove until it got hot enough. then i add salt and oil and put it in the oven for service. after service i would drain some oil out and use tongs and a towel to remove excess carbonized food. the salt acts as an abrasive. i would repeat this process as needed. sometimes could take a week or so.
i had 5 so i could clean one at a time. the problem was i had 1 day off and someone else would work my station and i would come back to a mess. if it was just me i could keep them clean for months but in one day, someone could jack up the seasoning and hard work.
i believe all of the casties at that job had been resurfaced. i had never used cast irons that needed that much attention so i prefer not to resurface mine. i use it all the time at home and never had a problem with the seasoning.