Off Topic Stainless steel pattern

A

Austin2903

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Oct 31, 2017
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I have this blade that is made out of 440 stainless steel or so it says on the blade, And it has this interesting kind of hilly pattern at the bottom, I was curious as to how this is accomplished and what tools may be required to reproduce it, So if anyone has any ideas I would love to hear them.

https://imgur.com/a/9SkTZ
9SkTZ

9SkTZ
 
That is most likely a mass produced Katana reproduction. As such the pattern was probably produced by bead blasting the pattern on the steel.
 
It looks like it's basically a fake Hamon, common on cheap display Katanas. Typically they are produced by etching, bead blasting, or laser. Many makers put in countless hours to actually produce beautiful Hamons that are IN the steel but if you just want to do make something look like that, there are a few ways. You would have to either mask off the pattern and bead blast it, or cover the blade with a resist, and etch in acid to etch the exposed areas. If the sword is stainless, we know the Hamon is fake, because 440 won't take a Hamon.
 
G Grayzer86 Yes, I know it was fake although thanks for the insight, You were 100 percent correct it was indeed a cheap display. Now onto the etching, How would someone go about etching and what is used as a resist?
 
nail polish, blue painters tape....
 
I mask mine with clay ;)
 
To make a faux hamon, mask off the blade that you don't want teched. Use enamel model paint as the resist. Etch the exposed part with acid, FC, or bead blast it. The difference between the two surfaces and the etchants used will determine which part is covered and which is etched/blasted.
 
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