Etching...Uncovering the Hidden Image. Part 3

Figure 1. The Process of Chemically Etching Copper Alloys

This is Part 3 of my series of blog posts on how to chemically Etch Copper Alloys using Toner Transfer Paper (TTP) or Press-n-Peel Blue (PnP, or PnP Blue) sheets as the main Resist. Please see Part 1 of this blog post series for general information and additional tips, several points are not repeated here.

This blog post expands on the description in Part 1's figure, "5. Piece in Etching Solution; areas unprotected by Resist will be etched away, the metal being removed is Orange", please see it for further details that are not repeated here.

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The Process of Chemically Etching Copper Alloys

1. Etchant / Etching Solution
2. Floater of Styroform
3. Tape, etc. attaches metal to Floater
4. Metal with Resist
5. Particles etched away
6. Heat Source
7. Vibration / Agitation


Dark Yellow = Etchant Solution.  Ferric Chloride => Copper Alloys;   Ferric Nitrate => Silver Alloys.

Dark Grey = Resist, is Toner, a Plastic not an Ink, from a HP Laser B&W Printer.

Purple = Added Resist (Nail Polish, Tape, etc.), to protect surfaces from Etchant.

Light Grey = Mounting or other Tape, Glue, etc., to attach Metal to the Floater.

Medium Grey = Floater to keep the Resist covered Metal suspended in Etchant.

Yellow = Metal being Etched, must first be cleaned properly.

Orange = Metal that is removed by the Etchant.


TO GO TO PART 1
TO GO TO PART 2