On Jun 30, 2:44=A0pm, LadyKate <ladyk...@[EMAIL PROTECTED]
> wrote:
> On Jun 30, 3:36=A0pm, Deren <drexe...@[EMAIL PROTECTED]
> wrote:
>
> > I am going to be making some 2mm microstars and I was wondering what
> > would be better? lead tetraoxide(lead va****, not good) or bismuth
> > oxide. here are the formula's that i am looking at using depending on
> > which one i choose.
>
> > also, does anybody know of anywhere i can get either of the chemicals.
> > I have checked most of the normal pyro chemical suppliers and can't
> > seem to find it.
>
> > any help is greatly appreciated,
>
> > Deren
>
> I like the bismuth formulas because they seem to work even if you mess
> them up slightly. You can roll them in green meal and they will pop
> reliably. =A0My favorite formula (for either bismuth subcarbonate or
> bismuth trioxide) is:
>
> bismuth trioxide 37.5%
> copper(II) oxide 37.5%
> magnalium 25%
>
> Bind with very thick slurry of NC (15% or so) - don't ****rk on the NC,
> make it thick and creamy, dry until it can be rolled between two
> popsicle sticks (ice cream treat sticks), use plastic wrap to protect
> your roller - which can be a spare rocket tube -, cut, dry, break
> apart, and roll with green meal while lightly spritzing with water.
>
> PS: Double base or single base smokeless, or pure NC that has been
> dissolved in acetone is what you have to use. Don't use ping pong ball
> mixes or hardware store lacquer paint.
i guess i am helping more than just myself by asking this. but like
Derek, i still don't know where to get the bismuth Dioxide.
Cheers
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