Umbrella reducer for ikea - inner 42, out 53

For ikea umbrella in a stand of diameter 55

Customized version of https://www.thingiverse.com/thing:2353502

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing\_id=2353502

Instructions

Using the following options:

crimp_percent = 0.2
innerdia = 42
outerdia = 53
rim = 2.7
height = 65.0
wall = 2.0
rimwall = 5.0
slot = 22.0
tol = 0.2