Convergent Series

learning, using & teaching metal clay, and other aspects of life

Who knew?! Colors, polishing, etc.

Posted by C Scheftic on 2013/11/12

Back in August, I wrote about one of a series of “pillow” beads I’d made using Hadar’s Quick Fire Bronze powder. In particular, I ended the post with a photo of the amazing colors the kiln provided that time, and a comment that I knew they were somewhat ephemeral.

Well, yes, after only a short time (and despite having tried to “protect” them with several layers of acryllic spray), they became rather dull. Still there, but no longer jump-out-at-you vivid. So I proceeded to do some polishing (moderately aggressively in the center-design area, and more gently around the edges) and then re-coated everything. This provided pieces with clearer bronze-yellow center-designs, while still maintaining a trace of the kiln-colors around the edges. I didn’t really think the vivid colors would last, but the subtle ones shown here have remained much more stable ever since. I’m pleased with these results.

The thing that did surprise me, however, was something that had not been at all obvious with the vivid coloring, but did jump out at me (peering closely through my bifocal safety glasses for magnification as I worked): my straight pencil-lead “registration” marks — ones that I’ve come to use often (to align parts or holes or … ) on silver clay that is fired in regular air — do not simply burn off when you bury bronze in activated carbon during firing. Who knew?! Did you? It was a surprise to me, so I thought I’d share it with y’all.

If you want to give your piece a bright, shiny polish, it’s very easy to grind (sand) the marks off. (I did that with another piece, just to be sure, though I didn’t think to grab a before-photo to use here.) But I didn’t want to do that with the pieces shown above, especially not to the one towards the right (on a brass chain). I liked its aged, colored look. So I’m just leaving the straight-line mark. I showed the piece to a number of people (metal clay artists and otherwise) and, in person, it didn’t seem to jump out to anyone (until I pointed it out to them). I’m now just calling it a part of this piece’s design.

These are now ready to go off for holiday-season sales. I hope they find good homes!

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One Response to “Who knew?! Colors, polishing, etc.”

  1. Nope, I didn’t know!

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