Customized version of http://www.thingiverse.com/thing:695599

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=695599

This is designed to fit a Madcow Rocketry Mongoose 38 high power rocket (38mm non-thin walled body tube with 3/32" fins).

NOTE! You need to stretch this in the z-axis to be as tall as you want it. I usually print them between 60 & 90mm in z, but that depends on your fin length.

Using the following options:

tube_diameter = 42.3
glue_clearance = 5
wall_thickness = 4
jig_height = 30
$fn = 150
jig_fin_width = 2
fin_width = 2.8
fin_number = 3