On Tue, 1 Jul 2008 14:42:57 -0700 (PDT), LadyKate
<ladykate@[EMAIL PROTECTED]
> wrote:
>On Jul 1, 4:32 pm, danielkaiser...@[EMAIL PROTECTED]
wrote:
>> On Jul 1, 7:42 am, TONY S <kclo42...@[EMAIL PROTECTED]
> wrote:
>>
>> > On Jul 1, 12:12 am, LadyKate <ladyk...@[EMAIL PROTECTED]
> wrote:
>>
>> > > Not bismuth dioxide. Bismuth trioxide.
>>
>> > > Skylighter is one source for either bismuth trioxide or bismuth
>> > > subcarbonate. However, the prices are getting higher by the day. I
>> > > know a guy who is selling a 50 lb bag of bismuth trioxide for 1568
>> > > bucks. ;-}
>>
>> > > The lead oxides will be lots cheaper - you can get them through
>> > > ceramic suppliers.
>>
>> > I concur with kate. www.quartzpegmatite.comhaslead trioxide foe 10$
>> > a pound
>>
>> #@[EMAIL PROTECTED]
dragon eggs!
>> Bismuth trioxide check, new copper oxide check, new Mag/al -80 thru
>> +250 errr check.
>> Screened the Mag/al and held -80 +100, went into the boonies of S.
>> Indiana and picked up a new can of NC, along with my star roller from
>> a buddy.
>> This was my 8th attempt at crackle, to offset the chance of failure I
>> stopped at a 1.4 shop and bought 2 types of "crackle balls".
>> Made the 37.5-37.5-25 that Lady Kate spoke of, poured the NC which is
>> a lot thinner than the double base I have and made a soup.
>> Stirred it down till thick and cut.
>> Unprimed,they smolder for awhile and throw an odd small spark.
>> Took the crackle balls apart and burned a core.
>> Very bright, and fast prime.
>> I'm going to redissolve with a little more NC, and make a hot prime
>> and see.
>> I have a silicon green prime that I'll finish with.
>> If anyone sees something amiss, please let me know.
>> Dan
>
>Just in case - Use thick NC lacquer (15% or thicker). Not thin NC
>lacquer that is used to make a thick mix of egg comp.
>
>I use much finer MgAl. I know, I know, everyone does it differently. I
>don't know if that is your real problem but I use -325 MgAl and expect
>a fairly quick pop when they are ignited. Here is an often played
>video:
>
>
>http://www.wichitabuggywhip.com/fireworks/extra/****hscrackle2.wmv
I've had no luck yet using subcarbonate, they just smolder there. The
Trioxide works flawlessly though. I'm still experimenting by changing
one and only one variable at a time, but my last try was:
Bismuth Subcarb 75
MgAl -100 +200 15
Copper Oxide 10
using 10% NC lacquer
As I said these failed, but substituting trioxide for the subcarbonate
works everytime -
I'll next try 15% NC - if that still fails I'll drop back to 10% and
go with finer (-200 +325) magnalium. It HAS to work sooner or later,
but it's still frustrating nonetheless.
-bob-
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