Richard: Forgot to add that it important to keep applying the acid so that both sides of the blade are kept wet. Sometimes it comes out after less than a minute, sometimes it takes ten or even fifteen minutes but usually after five minutes if nothing happens, then nothing is going to happen. Iv'e had nothing much happen even if i know the blade is laminated. You will find that it can be very frusrating at times, but that it can be very rewarding when a beautiful pattern suddenly jumps out at you. It makes all the work you put in polishing a sword worth it...............Dave.
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