01-13-2007, 11:22 PM
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Incurable SEMROC Fan
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Join Date: Mar 2005
Location: Twin Falls, Idaho, USA
Posts: 2,318
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Preview: "Tau Zero" Fin Guides
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Originally Posted by John Brohm
I said all of that to say this: it would seem to me that Carl could generate an extremely accurate and comparatively inexpensive family of fin alignment templates with his laser cutter
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Yeah, he's, uh (cough) workin' on it.   (See photo below.)
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I find that the fin slots in the template have to be just a slight tad over-size so that the template will slide on without any binding.
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I was thinking just today that I need to go down to the tool store and pick up some Dial Calipers to determine what the tolerance should be, since the prototype guides below fit *real* (i.e., "too") snugly. 
We need to cut some "triangles" to allow room for the fillets,  so the fin guide doesn't get glued to the rocket. 
Cheers,
__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131
"I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri.  "
--Bill Eichelberger, 02/22/2022
“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
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