Customized version of https://www.thingiverse.com/thing:2424931

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=2424931

Using the following options:

tube_diameter = 66
fin_width = 2.5
fin_number = 4
jig_height = 20
jig_fin_width = 25
wall_thickness = 2
brim_width = 15
glue_clearance = 6
$fs = 0.2
$fa = 0.2