![]() ![]() 【BRILLIANT 8.5” KIRITSUKE KNIFE】GRANDSHARP Kiritsuke Knife is popular for its extraordinary artistic creativity and incomparable cutting performance.As Forged – Twisted Pattern Damascus Steel £40.00 – £137.San Mai Stainless Steel Clad £30.00 – £56.00 Select options.San Mai Wrought Iron Clad £60.00 – £162.00 Select options.A darker contrast can be had by first etching in ferric and then transferring to 50X strength instant coffee. and I find etching can be as quick as 5 min in the height of British summer and take many hours in the winter. Ferric reactivity is very dependent on temp. Neutralize the blade in bicarbonate of soda solution and then clean in hot water and washing up liquid and rinse with cold water. Etch in 1/3 strength ferric chloride until desired depth. I find abrading the blade gives a better finish than acetone or washing up liquid and hot water. Grind to 400 grit then clean off all fingerprints with clean 800 grit abrasive on a rubber block. (Hardening will often leave a thin layer of decarburised material on the blade this needs to be removed as it can look patchy in the etch. Grind all decarburised material from the blade prior to etching. To soften for drilling I recommend a sub critical aneal, heating the steel to 700C or dull red if you do not have a heat treatment oven and allowing to air cool. I temper kitchen knives at 190C or 200C and choppers at 220C and axes at 250C. Temper immediately at temperature ranges between 180C and 250C. Harden by quenching into a fast quenching oil pre heated to at least 40C. Austenise at 800C and hold at temp for 5 minutes. ![]() I would recommend 3 normalization cycles. Normalize Damascus steel at 800C and then air cool. I apply anty scale compound to my blades when I normalize and harden them. You can also grind blades from this material but you will have to grind through the scale (if you want to the scale can be a nice feature and is often left near the spine in Japanese style kitchen knives.) The big advantage of forging a knife to shape is that the valuable material goes a lot further than if you were grinding from stock and your forging creates more pattern in the damascus steel. Buying material like this makes it a lot cheaper than if it has been surface ground and heat-treated. It is suitable for use for forging out blades. The as forged damascus is sold with forge scale on it and has not been normalized and heat treated. I weld in a reducing atmosphere forge and use no flux in the process. My damascus is forged in a flux free process using my 50 tonne press Alldays and Onions power hammers and rolling mill. This results in the beautiful wood grain and undulating twist patterned that the steel is famous for. The 2% nickel in the 15N20 remains bright when etched and the differing manganese con tents of the CS80 and En42J give a subtle contrast of differing greys in the pattern. The en42J both etch different shades of grey and the giving subtle depth to the pattern, the 15n20 etches bright giving some bling! These are the standard steel I use for my damascus and behave very well together expanding and contracting at similar rates and heat-treating at the same temperatures. ![]() These billets are made up from 3 steels 15n20 EN42J and cs80. These different steels etch differentially from one another giving beautiful swirling patterns in the steel. Damascus steel is a material made from forged layers of different steels. ![]()
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