#1
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Card stock for making centering rings
I use to use 3/16” cardboard with foam middle, but now it’s hard to find, because today’s companies use foam with a coating in place of the cardboard.
So my question is, what weight card stock should I buy to make centering for D-F black powder motor rockets 10 to 18oz range? Or Does anyone know a foam board with true cardboard on both sides that I can buy Thank you!
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======================= If the Sky is the Limit, then, why is there Footsteps on the Moon? ======================= |
#2
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Check mat board at Michaels or other craft stores or framing stores. It's like what I make my centering rings from. It's around 1/16" thick, give or take.
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#3
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Ditto
one sheet of matte board will last a lifetime
it even comes in pretty colors.....not that it makes any difference
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NAR 20602 used to be "powderburner" in another life |
#4
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Actual framing stores (not a Michaels or Hobby Lobby)
will often have scrap mat board for sale - cheap! These are sometimes the centers cut out of a border piece that are too small to be used on another frame. Add some gussets for a very strong engine mount: http://modelrocketbuilding.blogspot...art-4-24mm.html
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Hans "Chris" Michielssen Old/New NAR # 19086 SR www.oddlrockets.com www.modelrocketbuilding.blogspot.com http://www.nar.org/educational-reso...ing-techniques/ Your results may vary "Nose cones roll, be careful with that." Every spaceman needs a ray gun. Look out - I'm the Meister Shyster! |
#5
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I'm cheap. I often make them out of cereal boxes and just sandwich a couple together with wood glue if I want stiffness. I've never had one fail, even on clusters and larger motors.
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I love sanding. |
#6
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Quote:
I might try that—especially using a space-themed Quisp cereal box! Yes, believe it or not that stuff is still made. (Not Quake cereal, though.)
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Never trust an atom. They make up everything. 4 out of 3 people struggle with math. Chemically, alcohol IS a solution. NAR# 94042 SAM# 0078 |
#7
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I still eat it!! If anybody needs a box let me know.
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NAR # 102461 SR I have orbited the earth with John Glenn, walked on the moon with Neil Armstrong, landed on Mars, seen Jupiter and Saturn and explored the realm of deep space all thanks to Model rocketry. God Bless America and The United States Marine Corps |
#8
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Somewhere around here I still have a mint "Quisp Quazy Energy" wristwatch in a decorative tin case that I got for $5 and three box tops.
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#9
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Quote:
DANG! I missed that one! MY Quisp toy was a wearable Quisp beanie with a battery powered propeller. My BF was a Quake eater and his toy was a Quake miner’s helmet with a working headlamp. My mom said he training to be a gynecologist but I didn’t know what that meant.
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Never trust an atom. They make up everything. 4 out of 3 people struggle with math. Chemically, alcohol IS a solution. NAR# 94042 SAM# 0078 |
#10
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Quote:
I'd use thin plywood. 1/32" ply would probably be OK. But if it's for a very large diameter, or a crazy high thrust spike, then 1/16" plywood. On a 7" diameter 4 foot tall Little Joe-II, I actually made the centering rings out of 1/64" ply, but each ring was a sandwich of two 1/64" rings glued to very light 1/8" balsa. Very stiff, VERY light for the size and stiffness. I use the arc-scribing method to make rings, which works well with thin plywood and plastic: Article how-to: http://georgesrockets.com/GRP/Artic...Rings/Rings.htm
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Contest flying, Sport flying, it's all good..... NAR# 18723 NAR.org GeorgesRockets.com Georges'CancerGoFundMe: https://www.gofundme.com/f/help-geo...ay-fight-cancer |
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