This thread sparked a question in my head. Imagine that you are in a situation where you need to dispose of you wallet seed backup, but it is etched on a steel plate - how would you do it? The easiest answer is likely acid, but not everyone has access to it, and depending on the steel plate, it might be even highly resistant to corrosion. Another option is to damage it mechanically - in many of these steel plate products you are supposed to etch the words, so it should be possible to erase them or render unrecognizable. But it's likely hard to do thoroughly and traces of the words could remain.
Any more ideas?
I will do nothing, I do not have to erase or destroy the steel, since I will have move all my funds out of the wallet into a new one, the world is free to have the old recovery seed, I will gladly throw it in a bin, if anyone come across it and they import the seed they will find out that its empty.
Haven't you watch some videos on YouTube where they demonstrate how to create a crypto wallet? They always display the seed, because its for learning purposes only, if you like, go and import the seed, it will be empty anyway.
Why destroy something that's empty? Why spend money on Acid just to destroy a plate that has nothing inside? Abandoned the old steel and throw it out through the window, get a new stainless steel and do your backup.