Use household materials to etch a design into your knife or any metal to be exact.
Step 1: Materials
Knife (to etch) hobby knife, tape, vinegar, salt, wires, 9v battery, cotton swab, and a bowl.
Step 2: Prep
Mix salt and vinegar. Now add tape to knife and cut out etching design of your choice. (Make sure tape is pressed down HARD)
Step 3: Etch
Tape knife to one terminal and attach wire to other. Add the qtip (soaked in vinegar mix) to the wire. Simply touch the q tip to the cut out area of the knife and its etched!