Etching blades without stencil?

O

onewing

Joined
Apr 2, 2013
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After attempting to stamp blades I'm prepared to give up on that process, I commissioned a stamp but it wont mark deep enough the pre heat treated steel under a 10 tonne press and I don't fancy banging it with a hammer.

Is there anyway of etching a logo without using disposable stencils stuck to the steel? this method seems pretty cumbersome when attempting to do batches. Is there a "stamp" system that I can just push down onto the metal?
 
Those lasers won't touch steel.
You need a fiber laser to engrave steel.
You can also use a pantograph machine to engrave steel.
Why not just hit your stamp with a hammer?
 
Its a fairly long rectangular stamp, it's strikes unevenly with a hammer. I'd have to make a significant holder and hit with a very heavy hammer if it were to work.

Photographic Stencil Caps
Use photographic stencil caps with your carbon marker when you have long runs and/or when location of the mark is important. This stencil cap allows the operator to easily position his mark or marks in a precise manner. The electrolyte is fed from the marking cartridge reservoir incorporated in the tube. This simplifies the marking process.

Is this what I am after? copied from http://www.img-electromark.com/catalog/stencils/#photographic-caps . There's a lot to take in on that site and I think cost would get out of hand pretty quick, so many bits and pieces.
 
Does anyone know the difference between "black" and "white" marks? I mean, the black leaves a black mark whereas the white leaves the etch silver but what it the difference in the electrical current to achieve it?
 
You can also use an arbor press. While putting pressure on the lever, hit the top of the ram with a hammer.
 
When logos are etched via an electrochemical etch using DC current eats away the metal where as AC current leaves a black mark. Many will etch with DC then switch to Ac to darken it. All kinds of videos on youtube.



onewing said:
Does anyone know the difference between "black" and "white" marks? I mean, the black leaves a black mark whereas the white leaves the etch silver but what it the difference in the electrical current to achieve it?
Click to expand...
 
were you hot stamping ? just curious why it wasnt working. i stamp mine red hot, one smack with a 2 pound hammer. the white mark is when you do not blacken the background after etching. i think the blackening is achieved through reverse polarity, or reversing the diode, i am not positive. ( no pun intended).
 
john april said:
i think the blackening is achieved through reverse polarity, or reversing the diode, i am not positive. ( no pun intended).
Click to expand...
As Scott mentioned, the black is achieved with AC voltage. Current for the AC or DC is usually well below an amp, depending on stencil size.
 
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