Ah chihuahua! Is that infected?

__________________
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

You can get a longer blade by extending out one of the cheap break-off blade knives.
Here's a blog post showing a smaller nose cone.
https://modelrocketbuilding.blogspo...ur-build_5.html

The same technique works for larger nose cones,
Start with the blade short and make a shallow cut around the nose cone in a straight line,
Extend your knife blade to cut closer to the center,
Continue until the nose cone splits.

Keep your hands clear of the long blade - It can slip.
Don't use too much pressure - that blade might break off.

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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!

No - it looks pretty nasty, but this is after it’s was cleaned and stitched
At the ER. I was trying to carve a balsa block and the blade slipped.
‘15-16 years ago I think.

__________________
SAM #0031

Great idea! I now have those break-off blade knives in two sizes. Love them!

I may just go cut a cone in half to try it.

__________________
Lee Reep
NAR 55948

Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor
In the Paint Shop: Nothing! Too cold!
Launch-Ready: Farside-X, Maxi Honest John, Super Scamp

When I built my Whee II clone I used the current pnc -60ms nose comes and simply lengthened the tube to make up the difference in the length of the cones.As I recall the fin pattern worked surprisingly well.

__________________
Jeffrey Deem
NAR16741
CIA section 527

That’s brilliant! Is the PNC-60MS the Big Bertha cone?

__________________
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

Heck just 3d print a hollow tail cone.

__________________
"Old Rocketeer's don't die; they just go OOP".....unless you 3D print them.

Thanks! Yes,it's the cone currently used in the Big Bertha etc.

__________________
Jeffrey Deem
NAR16741
CIA section 527

The really long X-Acto knife blade for #6, #5, and #2 handles is the #26 blade.
The #2 and #33 blades would also work well for splitting cones.

I believe the #26 blade is still easily found on ebay. I have at least a dozen of them.
They can be really dangerous to work with. I prefer both the #33 and #2 over the #26.
The #26 is best used for rough shaping balsa blocks and whittling.

__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !

Thanks guys! I went with the long break off blade idea. It worked well. I used two BNC-60L nose cones.

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