Showing posts with label copper clay. Show all posts
Showing posts with label copper clay. Show all posts

Sunday, August 22, 2010

Experimenting is Key


Last week someone told me they saw me as a little mad scientist, puttering around and experimenting in my garage...with jewelry. That still makes me chuckle!

So part 2 of my copper clay experiment was adding silver to fired copper.


Art Clay Copper doesn't need carbon to scinter, though the surface of the copper will oxidize, it isn't too bad to remove. The tricky part is the pitting during additional firings for the silver. Guess I'll have to break down & get some carbon to see if that helps prevent pitting if not oxidation in the future. On the good side, the key really does look antique!

Other than that, making a lot of cork things this week.






This week: Working on a couple requests, writing instructions for class, and combating the monstrosity called my desk!


Sunday, January 3, 2010

It was a 2 torch hatching!


Hatchling #1: Deuteronomy
Hatched: Jan. 2, 2010 9pm
Weight: 9.8 g *
Length: 1.5 inches

Ok, New year, New clay. With the holidays & what not, there's been a bit of a stalemate going on between me & an open packet of Art Clay copper. Basically, if it can be torch fired & I've done something like it in silver, I want a crack at it. Getting things to fire right has been a bit of another story as pieces end of being complex than originally intended.

Providence came about in the form of a youtube video by Hadar Jacobson:
http://www.youtube.com/user/ArtInSilver#p/u/0/Z2NffdSP1EY

Copper needs more heat than silver to scinter properly, so use 2 torches!

The thing about copper clay is that it oxidizes & turns black after firing. In general quenching in water & pickling in an acid helps get most oxidation off. Deuteronomy was built on a toilet paper core & there's still a chunk of charcoal stuck inside him. Poor guy will have baby fat forever as pickling didn't seem like a good idea. Got some nice red color on his tail, but most of the oxidation was removed with fiber wheels as the micron polishing wheels didn't seem to do much. Or maybe just needed more power hmmm...

Tutorial on TP burnout cores by Sabine Alienor:
http://www.sabinealienor.com/dotclear/index.php?post/2008/12/06/Tuto-p%C3%A2te-d-argent-%28Art-Clay-Silver%2C-PMC%29-%3A-une-boule-creuse