Showing posts with label electroforming. Show all posts
Showing posts with label electroforming. Show all posts

Thursday, September 5, 2013

Electroforming

We have a special treat for you today...guest blogger Caroline of Blueberribeads is going to tell us a bit about electroforming.

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Firstly, I'd like to say hello, and big thank you to Jennifer for having me here!

I'm Caroline from Blueberribeads, a ceramic bead maker, but I love to try out anything creative, and I love mixed media.

I first discovered electroforming after stumbling across some beautiful lampwork beads while surfing around on google. I instantly fell in love with the effect, the colour, the texture, everything about it, and decided this was what my ceramic beads needed!

After much research and hunting around for parts, I worked out how to do it, so here's my version of electroforming in a nutshell...


 Electroformed Ceramic Acorns by Blueberribeads

 

Electroforming uses the same process as electroplating, where items are covered with a thin coating of metal. The difference with electroforming, is that the coating is much thicker and can also be used over organic, non metal items such as seed pods and beads. 


Electroformed seed head by Edooley



Now for the technical bit...

To 'grow' copper on to an item electricity passes from the DC power supply to the Anodes. These are pieces of sacrificial copper connected with wires around the tub suspended in a copper sulphate solution. The metal dissolves from the anodes passes through the solution and reforms on the cathode (the item to be electroformed). The cathodes, in this case beads and leaves, are suspended with copper wire into the solution and the bar is connected back to the power supply. The idea is to pass the electrical charge around in a loop.

Beads and leaves aren't conductive, so to complete the loop, they need to be painted with a conductive paint to make sure the copper forms where you want it.



To make leaves and other items in to pendants and charms, you need to attach a bail, I do this with 2 part epoxy resin. The next step is to seal the item if it's porous. I use clear acrylic car spray. Then when everything's set and dry they are painted with the conductive paint.

Once the paint is dry they are hung in the solution and power is switched on. To form something like one of my acorns takes about 10 hours. It's an extremely boring process and there's not much to see, but the end result is worth the wait!

When the leaves come out, they are bright copper, so to enhance the pattern of the leaves and the natural texture of the copper, I treat them with Liver of Sulphur and give them a tumble to bring back the shine.

To show you some of the effects you can get with electroforming, here's a few pics of my work and some of my other favourites.


Ceramic face pendant by Blueberribeads


Ceramic & leaf art nouveau pendant by Blueberribeads



Skeleton key by KimV Glass


Ring by PIROK


Glass Big hole beads by BeadsofPassion


Glass Acorn by Julie Nordine


I hope you've enjoyed reading and that I've maybe inspired you to have a go!



-Caroline