The Making of the Postage Stamp Pendants
Saturday, May 24th, 2008
Part one – image prep:
Choose images. I chose the following four stamps to begin with – one for each of the band member’s themes (oh, and an Alice one too!). The images then have to be photoshopped to eliminate colour and turn them into black and white line drawings. I then have to inverse the white and black parts , as the black parts will act as a resist to the acid that I will be soaking the copper in, and the white bits will be eaten away.

After I have the images ready, I print them on transparency film with the laser printer. Next, I heat up the iron and iron them onto a piece of 22ga copper. (I forgot to take pics of this stage!) You have to cover ALL copper that you do not want eaten by the acid with tape or indelible marker.

This Alice image is a scrap actually, as it transfered all smudgy – the one I actually have used is sharp. I will just scrub the toner off the copper and re-use it.
Part Two – acid!
Stick them in a container of Ferric Chloride acid for a couple of hours, checking often to make sure that you have the right depth of etching. The acid does all the work here,
. (This is being done by a professional, so do not attempt at home kiddies, acid is dangerous, and I’m a bit over confidant, ie. stupid, to not have gloves on).

When the acid had eaten away the depth of metal you want you take them out, soak up the acid in paper towels and then rinse well.

After that I polish the metal with tripoli using my flexshaft, then clean them in the ultrasonic machine.



I do not want the whole thing to be black, so I will polish the copper again with the flexshaft with Tripoli. Then into the ultrasonic, and then another polish with rouge to get smaller scratches off and make it shiny.



So now the copper is ready to be sawn up into the pieces for the pendants – which I will get to tomorrow, as now I have to go and make jewelry for customers (I have about 50 waiting, aargh) though what I would really like to do is just work on whatever projects are striking my fancy at the moment – which right now, are these. Ah well, in a perfect world…there would be benefactors!