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Lime Green Stars

Stars Lime Green

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#1 OldMarine

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Posted 31 August 2016 - 02:40 PM

After checking out Dagabu's recent pics of those awesome shells I am smitten with the lime green stars in a few of them. I've searched far and wide for a formula for this color and have come up empty handed. I have some nice purple stars I think would pair perfectly with this color. Any help here?
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#2 Maserface

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Posted 31 August 2016 - 03:35 PM

give this one a try:

 

Lime Green

16 Barium Nitrate
15 Potassium Perchlorate
3.5 Red Gum
7 Saran
5.5 Mgal
1 Airfloat charcoal
1 Cryolite
2.5 Dextrin


#3 Merlin

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Posted 31 August 2016 - 03:55 PM

Jopetes formula

Lime Green
Green composition +2% cryolite or
sodium oxalate

Green
0.24 Potassium perchlorate
0.24 Barium nitrate
0.11 Barium carbonate
0.09 Red gum
0.12 Parlon
0.15 Magnalium, 230-mesh
0.04 Dextrin
0.99 Total

#4 OldMarine

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Posted 31 August 2016 - 04:58 PM

Merlin, that is the formula that a couple of other folks recommended so I think I'll try it. Mike Swisher recommended the oxalate which I have so I'm on it like a duck on a Junebug!


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#5 Mumbles

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Posted 31 August 2016 - 05:16 PM

Both of those formulas should be good.  I have done a lot of work on pastels in the past.  I like cryolite as the yellow donor personally.  I think it gives a more vibrant color than sodium oxalate.  Lime is actually one of the hardest colors because sodium is such a strong donor.  There is a fine line between green, chartreuse, lime, and going too yellow.  I had to go to fractions of a percent to get it just right.


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Just so you guys quit asking, here is the link to the old forum. http://www.xsorbit2....forum/index.cgi

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#6 OldMarine

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Posted 31 August 2016 - 05:20 PM

Mumbles, Did you see the pics Dag posted? I asked him if that was the color he saw and not just filmwork and he said it was. I WANT THAT GREEN!!!

 

Mike Swisher said that between 1%-2% sodium oxalate in a MgAl fueled star should work well. I'll try it and if it isn't satisfactory I'll  order cryolite.


Edited by OldMarine, 31 August 2016 - 05:22 PM.

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#7 Mumbles

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Posted 31 August 2016 - 05:43 PM

Are you talking about the boomtown photos?  I think I saw a lime in one of the inner pistils about 2/3 the way down.


Just so you guys quit asking, here is the link to the old forum. http://www.xsorbit2....forum/index.cgi

The sky is my canvas, and I have 2,113 pounds of powdered paint in the workshop.

#8 OldMarine

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Posted 31 August 2016 - 05:53 PM

Are you talking about the boomtown photos?  I think I saw a lime in one of the inner pistils about 2/3 the way down.

 

That's the one!


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#9 WSM

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Posted 31 August 2016 - 08:06 PM

Every shade between green and red can be had by additive mixing of the two (if they're compatible). Try mixing a very tiny amount of compatible red with the compatible green and see if you can't nail it.

 

Several years ago, I was impressed with Tony Petro's miniature multi-break shells with color reports (that actually worked). He used compatible red, yellow and green flash compositions, and I asked him if he ever tried orange, and suggested something like 55% red mixed with 45% green as a starting point. He thanked me and we hung up. Five minutes later he called me back and simply said, "It works!".

 

See if a similar result can't be had for your lime green aspirations. Good Luck.

 

WSM B)


Edited by WSM, 31 August 2016 - 08:07 PM.


#10 Mumbles

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Posted 31 August 2016 - 09:07 PM

I actually had written a bit about that earlier, but decided to remove it.  I have never been successful in getting a lime I liked via additive mixing.  I'm not saying that it cannot be done, but just that I was never successful with it.  Maybe I'm just picky.  I was given a lime formula earlier today that relies on this principle however.  I'm eager to try it out.  


Just so you guys quit asking, here is the link to the old forum. http://www.xsorbit2....forum/index.cgi

The sky is my canvas, and I have 2,113 pounds of powdered paint in the workshop.

#11 CrossOut

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Posted 01 September 2016 - 01:54 AM

I found the veline green to be some what lime green. Some might call it light green. It's more or less a washed out gen from the mgal. Might be worth taking a look at.

#12 WSM

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Posted 01 September 2016 - 06:49 AM

I found the veline green to be some what lime green. Some might call it light green. It's more or less a washed out gen from the mgal. Might be worth taking a look at.

 

If the color is washed out because of using a bit too much magnalium, try using less in the formula and see how it changes. I've seen blues and purples with lower amounts of MgAl that look very nice.

 

It's worth a try...

 

WSM B)


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#13 NeighborJ

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Posted 01 September 2016 - 06:27 PM

All the greens I saw in those pics looked like a normal green, looked great but the other stars made them look lime green. Is this the color you are looking for? It is Baclo3 and shellac with a dragons egg.

Attached Files


Edited by NeighborJ, 01 September 2016 - 06:28 PM.


#14 dagabu

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Posted 01 September 2016 - 07:42 PM

Hmmmm, maybe your monitor is out of calibration, the color is LIME green. "Regular green" is DARKER


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#15 OldMarine

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Posted 01 September 2016 - 08:24 PM

Yup, that Lime Dag posted is what I'm looking for!
This is the first "star craving" I've had and it's mighty powerful.
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#16 dagabu

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Posted 01 September 2016 - 08:26 PM

KEY Lime green... YUMMY!   :D


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#17 CrossOut

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Posted 02 September 2016 - 10:20 AM

Idk where people come up with these colors all the limes that grow on my tree at dark green :P. Unless you cut them open. But by that logic lemon yellow should be more white and grape people should also be white.

#18 OldMarine

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Posted 02 September 2016 - 05:47 PM

I've received several suggestions for the green-ish color I'm searching for but not enough cryolite to try them all now so I'm winnowing them down for those I can try this weekend. My first real experiments!


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#19 Merlin

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Posted 02 September 2016 - 10:08 PM

I've received several suggestions for the green-ish color I'm searching for but not enough cryolite to try them all now so I'm winnowing them down for those I can try this weekend. My first real experiments!


Good luck! Don't be put down if the first couple try's are not what you want. For me it is a blue that is deep and bright as ruby red or emerald green. Gonna try Mumbles pyro science. But I fear it's not possible without chlorate and I'm not going there. At least lime green is possible.

#20 CrossOut

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Posted 03 September 2016 - 10:08 AM

Good luck! Don't be put down if the first couple try's are not what you want. For me it is a blue that is deep and bright as ruby red or emerald green. Gonna try Mumbles pyro science. But I fear it's not possible without chlorate and I'm not going there. At least lime green is possible.


You could try paris green stars. (Copper arsenate). Beautiful blue best I've seen and safe to use. Just recommend wearing a respirator while rolling them.





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