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Showing results for tags 'Salt bath'.
I was a bit surprised when a search in this forum didn't bring up 'salt bath foam'... Since I do quantities of small tools I now run 2 martempering - tempering baths to recieve the rings of knives from the high temp bath. The older one foamed to beat the band this time. Since the stuff is so darned hygroscopic I presume it is excess water - it's been a wet summer here and the lid isn't always tight. I presume that to dry it out one would leave the lid off - while keeping it hot for a day. Has anyone else had this happen? It made for some excitement when I put in a ring of 75 1500F blades - an