need help whit star size

[sjaak]

hi guys,

 

 

i need some advice about star size's. Last year i made a couple of 3'' and 5'' ball shells for new year's eve, i made tt stars using a star pump and some cut red en green rubber stars .

For my 3'' shells i used a 3/8'' pump and for my 5'' a 5/8'' pump the shells where pretty nice.

Because i don't like the uneven shape's and size's and the acetone smell of the cut stars i want to make some pumped colored stars this year.

Working whit a starpump is a time consuming job so i was thinking about ordering some starplates but i don't now which size for the next star compo's. Testing shells is not really a option in the area where i live so maybe you guys can help me.

 

 

pihko blue kp

potassium perchlorate 63

copper oxide 13

parlon 14

red gum 10

dextrin 5

 

buell red

potassium perchlorate 35

strontium carbonate 25

magnalium 14

parlon 13

red gum 7

dextrin 6

 

hardt's #1 white strobe

barium nitrate 51

potassium nitrate 8

magnalium 13

sulfur 23

dextrin 5

 

 

I was thinking a 3/8'' starplate for my 3'' shells and a 1/2'' plate for my 5'' shells but i'm not sure maybe this is to big for perchlorate stars?

I can choose 4 different size's 1/4'' , 3/8'' , 1/2'' and 5/8''.

So can you guys give me some advice ?

 

sorry for my bad English reading is not much of a problem but writing is difficult i hope you guys understand.

 

 

Sjaak

[Carbon796]

As a general guide line, a recommend finished star size, to include prime. For round stars in round shells, would be ...

1/4 " for 3" shells and 3/8 " for 5" shells. So I would use those size starplates. They will be a little bigger when primed, but still serviceable.