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Last month while trying to modify an ikea ceramic blade I realized how hard this ceramic material actually is. Sand paper, files and even the belt grinder do nothing at all to this kind of hard ceramic! So, since I had another blade from the three set I bought at Ikea I decided to take advantage of this hardess to make something useful, a file guide! Very handy to square up materials, true up tang transition in hidden tang blades and also grinding accurate plunge line and bevels.
Having something that is so abrasive resistant on the face of this tool helps to keep it accurate for loner period of time compared to just steel that would inevitably be scratched by abrasive even if hardened to high degrees.
