So this is what happens when you get wrapped up in your “real” job and leave a bird knife you were working on suspended in white vinegar for a solid WEEK!! The acid actually ate away the softer steel on the spine by like at least 1/16. Its a really cool effect too bad the blade is ruined. My question is were the cracks likely there before? Formed by the extended acid soak? Or is there no way to know for sure? I checked for cracks and had already hand sanded to 600 grit before putting it in acid.