Re: When doing 2 color changing round stars, is there a rule of thumb on outside's color thickness to inside's?
- From: james_kaiser@xxxxxxxxxxxxx
- Date: Wed, 28 Nov 2007 05:49:13 -0800 (PST)
On Nov 28, 8:03 am, "Don T." <-paint...@xxxxxxxxxx> wrote:
"Lloyd E. Sponenburgh" <lloydspinsidemindspring.com> wrote in messagenews:Xns99F64DFA37D4Alloydspmindspringcom@xxxxxxxxxxxxxxx
"Don T." <-paint...@xxxxxxxxxx> fired this volley in
news:13kqnv93hvgfhaa@xxxxxxxxxxxxxxxxxx:
Seems to me it would depend on the burn rate/speed of each color
layer. So
if the core color burns at, say, 2 gm/s and the outer color burns at 5
gm/s then the total amount (weight) of the outer layer would be 5/2 (2
Don, usually burn rates are measured as distance (of powder column) per
unit of time. In a dense layer, the "candle fashion" burning of powder
will be pretty consistent. The differences induced by rolling small
stars vs. large ones are less than the differences caused by the time of
rolling and amount of solvent used.
LLoyd
How was my reasoning on the problem otherwise? It is -real- early here.
--
Don Thompson
Stolen from Dan: "Just thinking, besides, I watched 2 dogs mating once,
and that makes me an expert. "
There is nothing more frightening than active ignorance.
~Goethe
It is a worthy thing to fight for one's freedom;
it is another sight finer to fight for another man's.
~Mark Twain
~~~~~~~~~~~~~~~~~~~~~- Hide quoted text -
- Show quoted text -
Mgal.
I'd thought of the changing relay might work along with the heat of
the green.
These are my first hand rolled stars, I'll be content with a out of
step star dance for my first shot.
I'd read the red is harder to light, even thought of doing a step
changing relay.
Size is working against it.
Using store bought 2" paper canisters.
Besides, if that didn't work, I'd get pissed and be out with my bucket
looking for the red cores.
Alot learned doing this, a small amount of cores makes alot stars,
outside color needs a whole lot more comp, and, I can't static test 2
color on a spalted maple stump with frost on it cause there is a small
glint of green at the very end from sitting on the stump.
Most learned, KISS ( keep it simple stupid)
"The thickness of the outer layer will be something less than
1/2 the diameter of the core layer simply because the larger the
sphere the
larger the volume of the outer sections given the same thickness of
each
section"
Yeah made sense.
But larger surface area will allow faster volume burn.
I'm already into a rounded 3-1/2 times more green comp, than red.
Dan
.
- References:
- When doing 2 color changing round stars, is there a rule of thumb on outside's color thickness to inside's?
- From: james_kaiser
- Re: When doing 2 color changing round stars, is there a rule of thumb on outside's color thickness to inside's?
- From: Don T.
- Re: When doing 2 color changing round stars, is there a rule of thumb on outside's color thickness to inside's?
- From: Lloyd E. Sponenburgh
- Re: When doing 2 color changing round stars, is there a rule of thumb on outside's color thickness to inside's?
- From: Don T.
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