fumed effect w/o actual fuming?????

[one-eared pig]

15527

ok, yesterday i played with my raku frit, a little dark ivory frit and a rod of intense black. since i am on a HH and MAPP, i use the trick of keeping my brass marver in ice to rapidly cool the raku & then get it glowing (repeat several times). i have only tried my raku frit 3 times, and so far only on dark ivory with some so-so color effects.

well, this time the bead fairy brought me a fumed bead to my kiln after dinner. the black part of my bead is shiny like it has been fumed.

I posted this in the tips & techniques because i want to be able to do this again. i had never heard of this happening, but i often don't pay attention like i should. is this common with intense black & raku? because hoo-boy, i can't wait to try this again. (*AFTER* I buy a respirator. i need to find Mike's site...)

:fireblob:

thanks for any input...

[cghipp]

My guess is that this is coming from the intense black. I believe the opacity in the intense black comes from extra metals in the glass. Using a reducing flame can bring those metals to the surface. I've gotten this effect before by using some of the Russian black glass on regular Moretti black. When I reduce the bead I get a metallic effect only on the Russian black area. The Russian black is more dense than regular black, which is why I came to that conclusion.

Courtney

[one-eared pig]

My guess is that this is coming from the intense black. I believe the opacity in the intense black comes from extra metals in the glass. Using a reducing flame can bring those metals to the surface. I've gotten this effect before by using some of the Russian black glass on regular Moretti black. When I reduce the bead I get a metallic effect only on the Russian black area. The Russian black is more dense than regular black, which is why I came to that conclusion.

Courtney


thanks, courtney!

[Kalera]

"Raku" (Reichenbach Iris Opal Orange #108 ) is also very heavy in silver, to the point of having silver chunks occasionally rise to the surface, and this may have contributed to the fumed effect as well.

[one-eared pig]

"Raku" (Reichenbach Iris Opal Orange #108 ) is also very heavy in silver, to the point of having silver chunks occasionally rise to the surface, and this may have contributed to the fumed effect as well.
OH MAN, that sounds YUMMY