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Paint still looks good, which is either a good thing, or your mix is bit weak.
Keep at it. Wear eye protection.
I got there after a couple of days extracting a similarly mullered post in an ancient pompino.
Gives me a chance to repost this gif...if it looks like below when you first put the juice in, you should get there soon
Ah, just seen you were watching the thread back then anyway!
Scrabble
@russmeyer
36 hours and two changes of caustic soda solution later it’s still not budging. You can see how I’ve mangled the seattube while hammering, sawing and twisting the post in my naive first attempts.
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