ln81@DIAL.PIPEX.COM on sat 26 aug 00
I would appreciate some help from Clayart having just received a
small present. I don't know much about this oxide other than its
yellow colour.
Both Hamer and Rhodes suggest using it with Tin Oxide as does
Peterson. She also suggests that it is useful - across the range.
Does she mean all temperatures?
I am a relative beginner with only a couple of years experience
mainly with Stoneware and Iron and Copper Oxides. Can anyone
offer the benefit of their experience? Would I do better using it over-
, under- or in a glaze? Would it be better over a dark body or dark
slip/engobe?
I stick to Iron or Transparent when food contact is involved. I
assume Vanadium is toxic. Is this true?
I don't think this has come up over the last year or so. Would it be
better left on the shelf?
Ivor
in Macclesfield UK
(Note NOT Ivor in OZ, who knows a lot more about pots than I do!)
Paul Lewing on sat 26 aug 00
Ivor,
Vanadium pentoxide will make a yellow color in glazes, and it helps to
have some tin with it. However, it's much easier and more reliable to
use a Sn/V stain. My experience with VO5 (the colorant, not the
shampoo) is also that it is a strong flux and often results in a puckery
surface on the fired glaze, which the stain does not. And the color
I've gotten with the oxide has never been as strong or pure as the color
from the stain, even with tin added.
And you damn betcha it's toxic! It's one of the worst!
Paul Lewing, Seattle
PS. Would adding VO5 anti-dandruff shampoo to glazes cure shivering?
Hmmmmm.
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