Date : 05/03/2014 (Wednesday)
Title : Etching process on the copper board
according to the PCB layout
This is the result of PCB Layout design using
Dip-Trace software. Design is ready to be printed using Toner Printer (carbon
ink). The next step is to attach PCB layout on the copper board.
Clothes iron will be used to iron the PCB
design to attach on the surface of copper board.
After attaching the PCB design on to the
copper board. It will be placed into the etching acid. This process takes about
20 minutes to remove the remaining copper that is not needed.
- The simplest method, used for small-scale
production and often by hobbyists, is immersion etching, in which the board is
submerged in etching solution such as ferric chloride. Compared with methods
used for mass production, the etching time is long. Heat and agitation can be
applied to the bath to speed the etching rate. In bubble etching, air is passed
through the etchant bath to agitate the solution and speed up etching
- Chemical etching is usually done with
ammonium persulfate or ferric chloride. For my project, Ferric Chloride
Anhydrous powder is used for etching process.
- The results of the etching process. Copper
is not needed will be eroded, only copper that covered by carbon ink will
remain on the board and form a circuit.
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