YAFJ .. (yet another) fin jig 3d model
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YAFJ .. (yet another) fin jig

YAFJ .. (yet another) fin jig

by Thingiverse
Last crawled date: 4 years, 4 months ago
Apparently I create fin jigs when I'm not actually building rockets. Here's another one.
The only one I've actually printed and used is the 2.6" 3-fin version (see pics). One pic shows this used in conjunction with one of my other jigs
There are 2 files for each size: a 3-fin version and a 4-fin version. Files named by size and fin count. (26_3, 26_4, BT60_3, BT60_4).
The 2.6" was created for Madcow 2.64 body tube (67mm). This is slightly larger
than Estes BT80 (66mm published spec). Fin slots are 1/8" (3mm).
The BT60 was created according to Estes published dimensions. It is 42.15mm ID. Fin slots are 3/32" (2.4mm) - probably most common thickness for low power kits.
Added BT20, BT50 rings.

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