40mm to 30mm Fan Adapter

Customized version of http://www.thingiverse.com/thing:21112

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=21112

Instructions

Using the following options:

largeflange = 6

holeaccess = Cowling

cowlingheight = 30

largeholes = 32

largesize = 40

$fn = 80

smallholes = 24

smallsize = 30

largeholesize = 3.5

smallflange = 4

wallthickness = 2

smallholesize = 3.5