Chicago's Willis Tower ( Sears Tower )

by Chooch, published

Chicago's Willis Tower ( Sears Tower ) by Chooch Jul 13, 2010

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This is a model of Chicago\'s Willis Tower, that I used to set a new tallest print record on 7/12/2010 @ 10:50PM. I took a Google sketchup model and heavily modified it, in order to print.


The model is 155mm tall! printed out at about 154mm. My bot is hacked, but using mostly original parts that came with the kit and printed parts to achieve the new record.

Who: Brian J. Pierce
What: Willis Tower
When: July 12th, 2010
Height: 154mm
Build time: 1 hour, 10 minutes
Material: 19cc of ABS
Source file: http://www.thingiverse.com/thing:3533
MakerBot: #1034

In case you're wondering, the actual building height without the antennae, is 136mm. The Willis tower's antennae is not counted in it's over all height, in real life.


Don't try and print this at its current scale, unless you have the z-axis height to do it!

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Printed 3/27/2011 on my highly modified Thing-O-Matic

Build time 1 hour 58 minutes


It hit the z limit switch on the last layer and luckily didn't break off the antennae when it moved the platform forward! Cutting it really close
This was made possible by using the 200mm leadscrew version of the Z motor by Kysan (and a matching housing that was 50mm plus in hieght over the stock

Turned out great!

what 3d building software did u use

I originally took a Google Sketchup model of the Sears tower, but it was getting difficult to modify, so i just took the geometry and built a new model in Autocad.

nicely done!

Off topic, but just looking at your pictures - have you got heatshrink around your extruder barrel? Looks to me like you have that ceramic insulation tape stuff then heatshrink over the top. I'm putting together an extruder at the moment.

I'm not seeing a picture of his hot end but it could be "Re-usable fiberglass insulation coated in black silicone rubber" from a http://makergear.commakergear.com hot end..

Brian, you're not going to update the Hall Of Fame wiki page???

Nope not heatshrink, Dave is right it's a http://Makergear.comMakergear.com silicone coated fiberglass insulation...over a .35mm big head nozzel.

I highly recommend Makergear's parts, apparently thiefs like them too. My first package was stolen outside my house. I wonder what the thief thought when he opened the box to find a superpack, LOL. Which reminds me, please keep an eye out for third party sales of Makergear parts in Illinois, they
could be mine.

I'll update the wiki this afternoon.

Well done on a new record!!

Man, was I tired when I posted this...I'll have to edit all the errors when I get home.

Thanks, I'll be releasing the Pfierce Z-axis extender kit in a couple of weeks.

It comes with 6 spacers and a new and improved z axis crank.

Hahaha, nice hack for more Z!