Seals

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Ingredients

  • A brass rod or copper rob to make your seal on it
  • Vinyl Tape or PVC tape
  • hydrochloric acid (around 25% for the concentration)
  • Hydrogen peroxide at 130 Volume (or even 110)
  • Water
  • A scalpel
  • Some gloves for handling acids
  • a glass jar to put the mixture in it

Preparation

  1. Put the tape on the brass rod and carefully cut out the seal you want to etch with a scalpel.
  2. Make the etching mixture :
    1. PUT 100ML OF WATER FIRST
    2. THEN 75ML OF HYDROCHLORIC ACID
    3. FINALLY ADD 75ML OF HYDROGEN PEROXIDE
  3. Put your brass rod in the mixture.
  4. You should see bubbles and the mixture should turn green after a time.
  5. you can take it out of the mixture to see how much it has etch and put it back if necessary.
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