Etch a Logo Into a Knife Blade in 5 Min !




Ahoi and welcome

The following instructable will show you how to etch a knife blade or metal in general.

As always, you can find a detailed instructional video at the end of the instructable!


Step 1: Tools and Material


- Dremel tool ( + cutting wheel and brass brush polishing wheel )

- sharp knife or laser engraving machine ( for the stencil )


- Knife or blade

- masking tape or something similar for the stencil

- Power-supply or batteries ( 4.5 to 6V will do)

- Resitor(s) 15 Ohm in total, 1W ( to limit the current )

- 2 Alligator clips

- Bit of wire

- Water

- Few grains of salt ( literally, 5 grains will do )

- Old fork ( or bent metal strip )

Step 2: The Steps

1. Cut the fork as shown in the video, and try to even out the remaining piece. You need as much

surface as possible, does not have to be 100% flat though.

2. Drill a hole into the neck of the fork, between "face" and grip", and attach a piece of wire plus resistor.

3. Get your stencil ready. If you do not own a laser-engraver or plotter, use strong but not too

flexible duct-tape.

4. Put the stencil on the blade and tape off the rest of the blade

5. Attach the negative lead of the power supply or batteries (taped in series or in a battery holder) to the wire.

6. Alligator-clip the PSU / batteries to the fork, and attach the + wire to the tip of the blade (don't scratch it).

7. Dissolve the salt in a couple of drops of water ( or use table water ), and pour 3 drops on your stencil.

8. Plug in your PSU and start moving the fork over the stencil, apply a bit of pressure to it while doing so.

9. After 2 min, you should see a black layer. Peel of the stencil and brass-brush off the black layer.

10. Finishing step: Tooth paste to polish the blade, AND its done :)

Step 3: Instructional Video

When I make a video, I make it WHILE doing what I do, nothing faked, nothing edited.

So good luck and have fun!



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    7 Discussions


    2 years ago

    I wish the videos would show up via the Instructable app, but they almost never do :/. Can you post a direct link to the video?


    3 replies

    Reply 2 years ago


    Reply 2 years ago

    Uhm....I have no idea how. And there is an app? Why is it not showing up there? Even got featured right away.


    2 years ago

    Hello first of all, compliments for this video ... it's really cool and interesting!

    I have a question, this technique can also be used on aluminum?

    2 replies

    Reply 2 years ago

    Should work on any metal. The current will chew out a few atoms there.


    Reply 2 years ago

    thanks for the help, and again compliments!